Quick answer: No single voice API wins, because “coverage” is three different lists. Counted from each vendor’s own files on 12 October 2026, Vonage (232) and Sinch (227) price calls to the most countries, then Twilio (222) and Plivo (212); Telnyx states 230+, but we could not retrieve a countable list from its pages. Telnyx documents voice numbers in the most countries (131). Infobip names the most SIP entry points in its docs (11).
Twilio, Telnyx, Vonage, Plivo, Sinch, Infobip and Bandwidth each publish coverage in a different shape: a rate sheet, a coverage table, a help-centre matrix, per-country pages or a single “100+ countries” claim. This page puts all seven CPaaS (communications platform as a service) APIs on one standard and counts what can be counted.
Which API offers best global coverage for voice connectivity?
It depends on which of three things you need. If you mainly place outbound calls, the counted lists are close at the top: Vonage prices 232 destinations, Sinch 227, Twilio 222 and Plivo 212. Telnyx claims 230+ but we could not count it, Infobip’s outbound price list has 123 countries against a 195 headline, and we found no Bandwidth count. If you need inbound numbers in many countries, the spread is far wider. Counting every country each vendor documents on its own pages, Telnyx leads with 131, then Vonage 115, Sinch 95, Twilio 94, Plivo 82, Bandwidth 67 and Infobip 38. If call quality for a voice agent matters most, the question is where your audio enters the network, and the seven vendors name between 1 and 11 locations each in their docs.
The quotable version: the API with the best global voice coverage is the one whose number list, rate list and edge list all contain your countries, and no vendor tops all three lists.
The three-coverage test: what “coverage” actually means
The three-coverage test splits every vendor’s coverage claim into three lists and scores each list separately:
- Numbers you can buy. The countries where the vendor will give you a voice-capable phone number (a DID: local, national, mobile or toll-free) that people can call. This is what an inbound AI receptionist or support line needs.
- Countries you can call. The destinations the vendor will terminate an outbound call to, which is what its per-minute price list covers. An outbound appointment setter needs this list, not the first one.
- Where your media enters the network. The named edge locations, data centres or SIP regions where your call’s signalling and audio join the vendor’s network. For a voice agent this sets the floor on latency, which is the extra delay before the agent hears the caller and the caller hears the agent.
A vendor can be strong on one list and thin on another. Telnyx runs network sites in Mumbai and Dubai, yet its number table has no row for India or the United Arab Emirates. Bandwidth lists Indian numbers, but its coverage table does not mark the Voice API as available there. A single “coverage” figure hides both.
The inclusion rule (applied identically to every vendor): a country or territory counts only if it appears on a per-country list or per-country page the vendor itself publishes, read on 12 October 2026.
- Numbers, column 1a: the vendor’s main per-country number list, meaning the price sheet, coverage table or coverage file it presents for buying numbers, with at least one voice-capable number type.
- Numbers, column 1b: column 1a plus every other country for which the vendor’s own per-country pages document an orderable number type or an inbound per-minute rate on a number type, unless its main list marks that country’s numbers as not voice-capable. Self-serve and on-request numbers both count; where a vendor marks the difference, we report the split.
- Calling: the country has its own per-minute rate in the vendor’s outbound price list or per-country rate pages. Rows that are not places are excluded: Twilio’s “Unknown” row, and Sinch’s satellite, “International Networks”, “OCHA” disaster-relief and “Universal Personal Telecommunications” rows.
- Edges: a named location or region where the vendor’s docs let your SIP or media traffic enter.
If a vendor publishes no such list, the cell shows its headline claim, marked “headline”, and it is not counted.
Voice API coverage compared, counted from each vendor’s own files (as at 12 October 2026)
| Vendor | 1a. Voice numbers: main list | 1b. Voice numbers: all documented | 2. Countries you can call | 3. Named edges / regions | Paperwork flagged on its own list |
|---|---|---|---|---|---|
| Twilio | 51 (number price list, self-serve) | 94 (adds 43 countries covered only by its regulatory guidelines); headline “100+ countries” | 222 | 8 edge locations in 7 countries | 42 of 51 countries have a number type marked “Address Required”; guideline pages for 89 countries |
| Telnyx | 131 (coverage table) | 131; headline “140+” on its network page | Headline: 230+ (“140+” on its network page) | 6 SIP regions, 1 in beta; 24 network sites mapped | Per-country requirements page (not counted) |
| Vonage | 113 (price sheet) | 115 (help-centre tables add Canada and Mozambique); 24 self-serve, the rest on request | 232 | 6 data centres in 5 countries | 54 of 97 countries in its voice-number table marked “Address required” |
| Sinch | 95 (coverage file) | 95; headline “145 countries” includes SMS-only numbers | 227 | 5 regional endpoints (cities not named) | 74 of 95 countries flag end-user requirements on at least one voice number type |
| Bandwidth | 67 (coverage table) | 67 (its 125 per-country pages add none); Voice API available in 45 | No count found; international rates on request | 1 named region (us-east-2) for Inbound SIP URI; allowed regions US and EU | Per-country pages (not counted) |
| Plivo | 12 (its SIP coverage hub: “Inbound (12 countries)”; the same page’s description says “inbound origination in 46 countries”) | 82 (per-country SIP coverage pages with an inbound rate; 35 of those pages also say “No inbound number types available”, and 47 list an inbound number type); headline “50+” | 212 (hub says 225; 13 pages show every type “Not Supported”) | 7 SIP trunking data centres in 6 countries | Per-country pricing pages (not counted) |
| Infobip | 37 (inbound price list) | 38 (free-trial list adds Cocos (Keeling) Islands) | 123 (outbound price list); headline 195 | 11 named data centres in 10 countries | Not counted |
Three things in this table are easy to misread. First, the calling column is nearly flat at the top: the 14 places Vonage prices that Twilio does not are mostly islands and small territories, plus Cuba, Iran and Syria. Second, a vendor’s own pages can disagree with each other. Plivo’s coverage hub says 12 inbound countries and its page description says 46; 47 of its per-country pages list an inbound number type, 82 show an inbound rate (35 of them alongside “No inbound number types available”), and its marketing says 50+. Twilio’s guideline pages cover 43 countries that are not voice rows in its price list, and those pages do not all say whether the numbers carry voice. Third, “self-serve” and “on request” are different products. Only 24 of Vonage’s countries are marked “Dashboard/API”; the rest are ordered through an account manager, with lead times in its own tables running from “Instant” to 90 business days (Kenya toll-free), and one row, Bolivia toll-free, reads “Best effort, min 6 months”.
Why the biggest number list can still miss your country
Telnyx has the longest number list on this page, and it still has no India or UAE row. A count tells you how wide a vendor is; only a spot check tells you whether it covers you. Here are six countries that come up often in AI voice deployments, checked against each vendor’s own pages:
| Country | Twilio | Telnyx | Vonage | Sinch | Bandwidth | Plivo | Infobip |
|---|---|---|---|---|---|---|---|
| Australia | Local, mobile, toll-free | Geographic, mobile, toll-free | Landline self-serve; mobile and toll-free on request | Local, mobile, toll-free (requirements) | Local, mobile, toll-free | Local, mobile, toll-free | On inbound price list |
| United Kingdom | Local, mobile, national, toll-free | Geographic, mobile, national, toll-free | Self-serve | Local, mobile, national, toll-free | All four types | Local, mobile, toll-free | On inbound price list |
| India | Toll-free in its regulatory guidelines; no local or mobile, per its help centre | Not listed | On request | Local, toll-free (requirements) | Local, toll-free; Voice API unavailable | Domestic numbers (certificate of incorporation, GST) | Not listed |
| United Arab Emirates | Toll-free in its regulatory guidelines; its voice guidelines also set terms for inbound-only geographic numbers, while its help centre says no local or mobile | Not listed | On request | Toll-free only (requirements) | Toll-free only | Local, toll-free on its number pricing page; toll-free only on its SIP coverage page | Not listed |
| Japan | Local, national, toll-free | National | On request | National, toll-free (requirements) | Local, toll-free; Voice API unavailable | Inbound rates for local and toll-free, but its page says “No inbound number types available” | On inbound price list |
| Nigeria | Mobile, in its regulatory guidelines only (not in its price list) | National, toll-free | Mobile, on request | Local (requirements) | Not in coverage table | Inbound rate for local, but its page says “No inbound number types available” | Not listed |
Twilio’s sources need reading together. Its help centre says it does “not offer any Local or Mobile” numbers in India or the UAE, and neither country is in its price list, but its regulatory guidelines carry toll-free number pages for both. Its UAE voice guidelines also set terms for a “UAE Geographic Number” bought from Twilio, which “will only be used to receive inbound voice calls”. Plivo’s pages split the same way for the UAE. Where a vendor’s own pages disagree, confirm with the vendor.
The lesson for anyone running a multi-country voice agent: write your country list down first, then check it against each vendor’s per-country pages. Do not compare headline totals. For Australia, the UK and Nigeria, Telnyx and Sinch list all three, and Vonage does with Nigeria on request. Plivo’s Nigeria page shows an inbound rate but says “No inbound number types available”. Twilio covers Nigeria only through its regulatory guidelines, and neither Bandwidth nor Infobip lists it. Swap Nigeria for India and Telnyx drops out, while Twilio’s documented Indian option is toll-free only.
Where your call’s audio enters each network
For an AI voice agent, audio has to reach the speech-to-text and language model and come back on every turn. The edge your call enters on is the first hop of that loop. These are the locations each vendor’s own docs name for voice traffic:
| Vendor | Named locations | Source in the vendor’s docs |
|---|---|---|
| Infobip (11) | Frankfurt, Amsterdam, Bogotá, New York, Portland, São Paulo, Singapore, Johannesburg, Moscow, Istanbul, Kuala Lumpur | SIP trunk set-up: SBC table and failover region pairs |
| Twilio (8) | Sydney, São Paulo, Dublin, Frankfurt, Tokyo, Singapore, Ashburn, Umatilla | Edge Locations page; “roaming” picks the lowest-latency edge but is not available for SIP Domains or Elastic SIP Trunking |
| Plivo (7) | North California, Virginia, Frankfurt, São Paulo, Singapore, Sydney, Mumbai | Zentrunk technical specifications |
| Telnyx (6 regions) | US, Europe, Australia, Canada, Middle East, Asia (beta); network map shows 24 sites in 10 countries | SIP signalling addresses; Our Network page |
| Vonage (6) | Virginia, Oregon, Dublin, Frankfurt, Singapore, Sydney | Voice API regions |
| Sinch (5 regions) | Europe, North America, South America, South East Asia 1 and 2 | Voice API regional endpoints |
| Bandwidth (1 region) | us-east-2 signalling and media pools for Inbound SIP URI; an allowedRegions setting accepts US and EU | Inbound SIP URI Quick Start |
Of the seven, only Infobip names an edge in Africa (Johannesburg). Only Plivo names an India SIP entry point (Mumbai), though Telnyx’s network map also shows sites in Mumbai and Chennai. Only Telnyx names a Middle East region. If your callers are in Lagos or Riyadh and your vendor’s nearest edge is Frankfurt, every turn of the conversation carries that distance. We explain how to measure what that does to a voice agent in our breakdown of what vendor voice-agent latency numbers actually measure.
Edge counts are a floor, not a ranking. Telnyx’s map shows 24 sites but its SIP regions page names six, Sinch names regions rather than cities, and Bandwidth’s one named region belongs to a single SIP entry service, not its whole network.
Regulatory bundles and KYC: the coverage you only find at checkout
A country on a number list is not the same as a number you can switch on today. Most regulators require the business that holds a number to prove who it is and where it operates, so carriers collect documents through regulatory bundles (KYC, or know-your-customer, checks). Three vendors flag this on their own lists, and the shares are high:
- Sinch: 74 of its 95 voice countries flag end-user requirements on at least one voice number type.
- Vonage: 54 of the 97 countries in its voice-number help table are marked “Address required”, and some rows add a letter of intent, proof of local address or a business registration.
- Twilio: 42 of its 51 price-list voice countries have at least one number type marked “Address Required”, and its regulatory guidelines set out identity and address rules for 89 countries.
Paperwork is also where vendors differ for the same country. For Australian numbers, Twilio and Sinch flag requirements, while Plivo’s Australian pricing page lists the compliance requirement for local, mobile and toll-free numbers as “Not Needed”. For India, Plivo lists a certificate of incorporation and GST registration, and Twilio’s Nigeria guidelines ask businesses for a Nigerian address and a letter of authorisation. We set out the review windows vendors publish for UK and Australian bundles in our guide to UK and AU number KYC approval times. If you are launching in several countries at once, plan around the slowest one.
Own network or aggregated? What each vendor says about itself
Even the vendors with the strongest ownership claims hold licences in far fewer countries than they can call: Telnyx cites licences in “30+ countries” against “230+” for SIP trunking. What differs is how much each claims to own, and the claims are worded differently enough that they cannot be ranked against each other:
- Telnyx says it holds carrier licences in “30+ countries” (its network page also shows “Carrier licenses 45+”) and owns the network end to end.
- Bandwidth describes an “owned and operated” network that is “never more than one hop away from PSTN in ~70 countries”, with “Full-PSTN replacement in 40 countries”.
- Sinch cites “600+ direct carrier connections” and “~12,800 interconnections”.
- Twilio cites “4,800+ carrier connections” and “180+ countries reached”.
- Infobip cites “300 voice connections globally”.
- Plivo describes regional points of presence “across five continents” with “direct one-hop carrier connectivity”, and its coverage hub cites “900+ networks”.
- Vonage documents three geo locations with two regional endpoints each, and says calls originating from different geo locations “cannot be merged”.
Check emergency calling per country rather than per vendor: Bandwidth’s table marks it available in 45 countries, and Telnyx’s in 56.
When one CPaaS is enough, and when to go multi-carrier
The thresholds below are our decision rules, built on the counts above. They are a starting point to argue with, not data:
| Your situation | One CPaaS is enough when… | Add a second carrier when… |
|---|---|---|
| Inbound numbers | Every country you need a number in is on one vendor’s list, with the number type you need | Even one country is missing, appears only “on request” with a lead time longer than your launch date, or appears only on a page that conflicts with the vendor’s main list |
| Outbound calling | Usually: Vonage, Sinch, Twilio and Plivo each price 212 or more destinations | A destination you call is missing from your vendor’s rate list (Infobip’s outbound list has 123), or its rate is far above another vendor’s |
| Voice-agent latency | Your callers are on the same continent as one of the vendor’s named edges | A large share of your callers are on a continent where your vendor names no edge, for example Africa, where Infobip is the only vendor here that names one |
| Paperwork | One or two countries need regulatory bundles | Five or more do, and a second vendor already holds approved documents for some of them |
| Resilience | No single country carries most of your calls | One country carries more than half your calls, and a dropped day costs bookings, so a second carrier in that country is cheap insurance |
Going multi-carrier does not have to mean two codebases. Most CPaaS platforms accept a SIP trunk from another carrier (Twilio calls this Bring Your Own Carrier), so you keep one API and route one country through a second network. We walk through that pattern in our guide to pairing a SIP trunk provider with Twilio BYOC in Australia, including when it does not save money.
Who each option is wrong for
- Twilio is the wrong pick if you need local or mobile numbers in India or the UAE, which its help centre says it does not offer; in India its documented option is toll-free. Of its 94 documented number countries, 43 appear only in its regulatory guidelines, not in its downloadable price list. Check those in the Console or through its Exclusive Number order form, which its help centre says the API does not support.
- Telnyx is the wrong pick if India or the UAE must be on the same account; neither is in its number table. Its Asia SIP region is labelled beta as at 12 October 2026.
- Vonage is the wrong pick if you need instant self-serve numbers in many countries; 24 are self-serve and the rest are on request, with lead times up to 90 business days, and “Best effort, min 6 months” for Bolivian toll-free numbers. Its help centre also says international reach for inbound calls from abroad “cannot be guaranteed for any country or number type”.
- Sinch is the wrong pick if you cannot supply end-user documents quickly, because most of its voice countries flag them. In fairness, that reflects the regulators more than Sinch, and Sinch states it more plainly than most.
- Bandwidth is the wrong pick if the Voice API itself must run in one of the 22 countries, including India, Japan and the Philippines, where its table lists numbers but does not mark the Voice API available.
- Plivo is the wrong pick if you need one unambiguous inbound country list before you sign. Its coverage hub says “Inbound (12 countries)” and describes “inbound origination in 46 countries”, 47 of its per-country pages list an inbound number type, 82 show an inbound rate and its headline says 50+, so confirm your countries with Plivo first.
- Infobip is the wrong pick if you need inbound numbers in India, the UAE or Nigeria, none of which is on its 37-country inbound price list.
Or don’t build on raw telephony at all: use a voice-agent platform
Everything above assumes you are building the agent yourself. If what you actually need is the outcome (calls answered, leads qualified, appointments booked), a voice-agent platform takes the telephony layer off your list.
Zian is the first platform to look at for that job. It answers inbound calls 24/7 as an AI receptionist (qualifying callers, booking appointments, transferring calls and taking messages) and runs outbound calls with SMS, email and WhatsApp follow-up, in 30+ languages. It integrates with HubSpot, Salesforce, HighLevel and Zapier. Zian is in a partnership-application beta and does not publish prices. If you would rather not run any of it in-house, LeadsNow.ai is the managed, done-for-you option. It runs on Zian, works pay-per-result and answers leads in under 60 seconds, 24/7. If you are weighing language support as well as country coverage, our comparison of voice agent APIs for multilingual support covers that layer.
Apply For Partnership: tell us which countries your calls come from and what the agent needs to book.
How to run the three-coverage test on your own country list
- Write three lists. List the countries you need numbers in, the countries you call and the countries your callers sit in. They are rarely the same.
- Download, don’t browse. Use the price sheets and coverage files listed in the source table below, and check whether your countries are on each list, not how long the lists are.
- Read the second source. Where a vendor has guideline or help pages as well as a price list, check both. Twilio’s and Plivo’s pages disagree for some countries.
- Mark self-serve against on request. An “on request” number with a lead time of 20 business days or more is a project dependency, not coverage.
- Match callers to edges. For each region your callers sit in, find the nearest named edge in the table above and test latency from there before you commit.
- Price the paperwork. Count the countries that flag address, identity or business registration documents, and start those bundles first.
- Decide one or two carriers using the threshold table. Then re-run the check every quarter, because these lists change: Sinch’s coverage file is dated June 2026, and Twilio’s help centre says it is “not able to provide a timeline” for local or mobile numbers in India or the UAE.
Method and disclosure. Seven CPaaS vendors with public programmable voice APIs, read on 12 October 2026 from their own pages, downloads and docs. Counts were made by script from the saved files under the inclusion rule above. No vendor was ranked overall. zian.ai is published by Zian AI, which is named in the platform section of this page; no CPaaS vendor paid for or reviewed this comparison.
Where every figure on this page comes from
| Figure | Who published it | Link | Date read |
|---|---|---|---|
| 51 voice-number countries; 42 with “Address Required” | Twilio (number pricing CSV) | SiteNumbersPricing.csv | 12 October 2026 |
| Regulatory guideline pages for 89 countries (43 not voice rows in the price list); India and UAE toll-free pages; Nigeria mobile page with address and letter-of-authorisation requirements | Twilio | Regulatory guidelines, Nigeria | 12 October 2026 |
| UAE geographic numbers “will only be used to receive inbound voice calls” | Twilio | UAE voice guidelines | 12 October 2026 |
| 222 outbound destinations | Twilio (outbound voice pricing CSV) | OutboundVoicePricing.csv | 12 October 2026 |
| “100+ countries”, “180+ countries reached”, “4,800+ carrier connections” | Twilio | twilio.com/en-us/phone-numbers | 12 October 2026 |
| 8 edge locations | Twilio | Edge Locations | 12 October 2026 |
| No local or mobile numbers in India or the UAE; “not able to provide a timeline” | Twilio help centre | Article 22550748886043 | 12 October 2026 |
| Exclusive Number orders not supported by the API | Twilio help centre | Article 223183068 | 12 October 2026 |
| 131 inbound countries and territories; 230+ SIP trunking countries; licences in “30+ countries”; emergency services in 56 | Telnyx | telnyx.com/global-communications | 12 October 2026 |
| “140+” local numbers and SIP trunking countries; “Carrier licenses 45+”; 24 network sites | Telnyx | telnyx.com/our-network | 12 October 2026 |
| 6 SIP regions, Asia in beta | Telnyx | sip.telnyx.com | 12 October 2026 |
| 113 voice-number countries; 232 outbound destinations | Vonage (global pricing sheet linked from its pricing page) | Voice API pricing | 12 October 2026 |
| 115 countries with help-centre tables; 24 self-serve; 54 of 97 “Address required”; lead times from “Instant” to 90 business days, and “Best effort, min 6 months” for Bolivia toll-free; inbound international reach “cannot be guaranteed” | Vonage API support | Voice Numbers Features Overview and its SMS + Voice and toll-free companions | 12 October 2026 |
| 6 regional data centres; three geo locations; calls “cannot be merged” across geo locations | Vonage | Voice API regions | 12 October 2026 |
| 95 inbound voice countries; 74 with end-user requirements | Sinch (numbers coverage CSV, June 2026) | Sinch country coverage | 12 October 2026 |
| “Virtual number coverage in 145 countries” | Sinch | Sinch country coverage | 12 October 2026 |
| 227 outbound destinations | Sinch (voice price list download) | Sinch voice pricing | 12 October 2026 |
| 5 regional endpoints | Sinch | Voice API reference | 12 October 2026 |
| “600+ direct carrier connections”, “~12,800 interconnections” | Sinch | sinch.com/phone-numbers | 12 October 2026 |
| 67 countries in table; Voice API in 45; numbers listed but Voice API unavailable in 22 countries, including India, Japan and the Philippines; emergency services in 45; “~70 countries”; “Full-PSTN replacement in 40 countries” | Bandwidth | bandwidth.com/coverage | 12 October 2026 |
| “Owned and operated” network | Bandwidth | Bandwidth Voice API | 12 October 2026 |
| us-east-2 signalling and media pools; allowedRegions US and EU | Bandwidth | Inbound SIP URI Quick Start | 12 October 2026 |
| “Outbound (225 countries) Inbound (12 countries)”; “900+ networks”; 212 countries with an outbound rate and 82 with an inbound rate on per-country pages (47 listing an inbound number type; 35 saying “No inbound number types available”); “inbound origination in 46 countries” (page description) | Plivo | Plivo SIP trunking coverage and its per-country pages | 12 October 2026 |
| “50+ countries” numbers; “190+ countries” reach; points of presence “across five continents”; “direct one-hop carrier connectivity” | Plivo | Plivo Voice | 12 October 2026 |
| 7 data centres | Plivo | Zentrunk technical specifications | 12 October 2026 |
| Australia “Not Needed”; India certificate of incorporation and GST; UAE local and toll-free | Plivo | Australia number pricing, India number pricing, UAE number pricing | 12 October 2026 |
| 37 inbound countries; 123 outbound countries | Infobip | Infobip voice pricing | 12 October 2026 |
| 195 countries covered for voice; 300 voice connections | Infobip | infobip.com/voice | 12 October 2026 |
| 11 named data centres | Infobip | Set up a SIP trunk | 12 October 2026 |
| Free-trial inbound list (adds Cocos (Keeling) Islands) | Infobip | Voice getting started | 12 October 2026 |
| Zian capabilities, 30+ languages; LeadsNow.ai under 60 seconds, pay-per-result | Zian AI; LeadsNow.ai | zian.ai home page, leadsnow.ai | 12 October 2026 |
Frequently asked questions
Which voice API covers the most countries?
For outbound calling, Vonage’s price sheet lists 232 destinations, Sinch’s 227, Twilio’s 222 and Plivo’s per-country pages 212, counted on 12 October 2026; Telnyx states 230+. For voice numbers, Telnyx documents 131 countries and territories, ahead of Vonage (115), Sinch (95) and Twilio (94). No vendor leads every list.
What is the difference between number coverage and calling coverage?
Number coverage is the set of countries where a vendor will give you a phone number people can call. Calling coverage is the set of countries you can dial out to. Every vendor here can call more countries than it has numbers in: Twilio prices 222 destinations but its number price list has voice numbers in 51 countries, or 94 counting its regulatory guidelines.
Does Twilio offer phone numbers in India or the UAE?
Not local or mobile numbers. Twilio’s help centre says it does “not offer any Local or Mobile United Arab Emirates (UAE) or India phone numbers” (Twilio help article, read 12 October 2026). Toll-free numbers for both countries appear in Twilio’s regulatory guidelines, and its UAE voice guidelines also set terms for UAE geographic numbers used for inbound calls only. Neither country is in its downloadable number price list, so confirm with Twilio first.
Do I need a regulatory bundle to buy international phone numbers?
Usually, yes. Sinch flags end-user requirements in 74 of its 95 voice countries, Vonage marks 54 of 97 countries “Address required”, and Twilio marks at least one number type “Address Required” in 42 of the 51 countries in its price list. Start the paperwork for your slowest country first.
Should I use one CPaaS or several for international calls?
One is enough when every country you need a number in is on one vendor’s list and your callers are near one of its named edges. Add a second carrier, often through a bring-your-own-carrier SIP trunk, when a country is missing, only available on request, or carries more than half your calls.
Which voice API has data centres closest to my callers?
It depends where they are. Infobip names 11 locations including Johannesburg, Twilio 8 including Sydney and Tokyo, Plivo 7 including Mumbai, Telnyx 6 regions including the Middle East, Vonage 6, Sinch 5 regions and Bandwidth one region, us-east-2, for its Inbound SIP URI service.
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