Phone number validation tools compared by price
Quick answer: For 5,000 carrier and line-type lookups a month, the lowest published price on 19 October 2026 is Numverify Basic at $14.99, then Abstract API Starter at $19, Veriphone at $39 and Twilio Lookup at about $40. SimpleVerifier's $49.99 plan costs more for phones alone but includes unlimited email verification. Its free validator checks format, country and line-type range without an account.
By SimpleVerifier Team · Last updated · Prices and limits checked on each vendor’s own site
Side by side
Ranked by the lowest published monthly price for 5,000 live lookups that return carrier and line type.
| # | Tool | 5,000 lookups a month | Free limit | Bulk limit | Price | Signup needed | Best for |
|---|---|---|---|---|---|---|---|
| 1 | Numverify | $14.99 | 100 requests a month | API only; 5,000 requests a month on Basic | $14.99/mo (Basic, 5,000 requests) | Yes (free account, API key) | Low-volume API lookups on a budget |
| 2 | Abstract API | $19 | 100 requests | Bulk CSV upload on paid plans; 5,000 requests a month on Starter | $19/mo (Starter, 5,000 requests) | Yes (free account, API key) | Developers who want location and timezone fields too |
| 3 | Veriphone | $39 | 1,000 credits a month | API only; 50,000 credits a month on Professional | $39/mo (Professional, 50,000 credits) | Yes (free account) | High volumes of standard validations |
| 4 | Twilio Lookup | $40 | Formatting and validation free; line type is paid | API only, pay per request | $0.008 per Line Type Intelligence request ($40 for 5,000) | Yes (Twilio account) | Teams already sending SMS or calls on Twilio |
| 5 | SimpleVerifier | $49.99 | Free tool: unlimited format, country and line-type range checks | CSV up to 100,000 rows on paid plans | $49.99/mo (Email + Phone, 5,000 live carrier lookups) | No for the free tool; yes (paid plan) for live lookups | Teams that verify emails and phones on one bill |
How we compared
We read each vendor's own pricing page on 19 October 2026. Where a vendor charges per request, we multiplied the published rate by 5,000; where it charges credits, we used its stated credits per live carrier lookup. We compared price and returned fields only, not accuracy, and left out vendors whose pages did not state a clear price for this volume.
Each tool in a few lines
1. Numverify
Best for: Low-volume API lookups on a budget
- Carrier and line type on every plan, including the free one
- Yearly Basic is $161.99
- Watch out: A hard request cap per plan; 50,000 a month is $59.99
Checked October 19, 2026: Numverify pricing
2. Abstract API
Best for: Developers who want location and timezone fields too
- Returns carrier, line type, region, city and timezone
- Bulk CSV upload on paid plans
- Watch out: Messaging and risk fields need the Standard or Professional plans
Checked October 19, 2026: Abstract API phone validation pricing
3. Veriphone
Best for: High volumes of standard validations
- 1,000 free credits every month
- A standard validation is 1 credit, so the $12.99 Starter covers 10,000 of them
- Watch out: A live current-carrier lookup costs 10 credits, so 5,000 of them need the $39 plan
Checked October 19, 2026: Veriphone pricing
4. Twilio Lookup
Best for: Teams already sending SMS or calls on Twilio
- Basic formatting and validation has no per-request charge
- Add-ons such as caller name, identity match and SMS pumping risk on the same API
- Watch out: No dashboard upload for a list; it is an API
Checked October 19, 2026: Twilio Lookup pricing
5. SimpleVerifier(our tool)
Best for: Teams that verify emails and phones on one bill
- Unlimited email verification is in the same plan
- Failed carrier lookups do not count against the 5,000
- The free validator runs in your browser with no account
- Watch out: The free tool reads the numbering plan only; it cannot tell whether a number is in service
- Watch out: Costs more than phone-only APIs if you need no email verification
Checked October 19, 2026: SimpleVerifier pricing
Common questions
- What is the lowest-priced phone validation API for 5,000 lookups a month?
- By published prices on 19 October 2026, Numverify Basic at $14.99 a month for 5,000 requests, then Abstract API Starter at $19. Both return carrier and line type.
- Can I validate a phone number for free?
- Yes, within limits. SimpleVerifier's phone number validator checks format, country and line-type range with no account and no cap. Twilio Lookup's formatting and validation has no per-request charge but needs a Twilio account. Numverify and Abstract give 100 requests and Veriphone 1,000 credits a month.
- Does a valid phone number mean it is in service?
- No. A format check says the number fits its country's numbering plan. Only a live carrier lookup shows which network a number is on now, and even that does not prove someone answers it.
- Why does SimpleVerifier rank last here?
- Because the rule is price for phone lookups alone, and the $49.99 plan also pays for unlimited email verification. If you only need phone lookups, a phone-only API costs less.