1Lookupvs

TeleSign

The 5 best TeleSign alternatives in 2026 start with 1Lookup, which charges less than half of TeleSign's $0.011 list price per phone lookup on every plan.

1Lookup is the best TeleSign alternative for self-serve phone intelligence: less than half TeleSign's $0.011 list price per lookup on every plan, with carrier, line type, a risk level, and Do Not Call status on each validation, and live HLR status and spam flags on the same key. Twilio Lookup and Vonage fit platform-native teams, and Veriphone and numverify cover basic checks.

Carrier, line type, a risk level and Do Not Call status on every phone validation, for 1 credit
Live HLR status, spam flags and a TCPA litigator scrub on the same key
76 data products on one API key, with an MCP server and Zapier, Make and n8n apps

Prices verified October 2026 on each vendor’s own pricing page.

These are the reasons teams look beyond TeleSign.

Phone-centric only - no email or IP address validation products
Several prices are unpublished and require sales contact: Voice Verify, Silent Verification, missed-call verification, and all Phone ID attributes beyond the standard set are 'Talk to sales'
No recurring free tier - only one-time complimentary trial test credits
Premium data is much pricier per unit than the base lookup: Contact append is ~9x ($0.10) and Intelligence scoring ~14x ($0.15) the $0.011 Phone ID rate, and volume discount tiers are not published

1Lookup leads the shortlist, followed by the closest swaps.

1. 1LookupTop pick, our product

Best all-in-one: 76 data products on one API key and one credit balance

Pick 1Lookup when you check more than one thing about a customer and want phone, email and IP validation, live HLR status, Do Not Call checks and enrichment from one self-serve API on one credit balance, instead of a separate vendor for each.

Starting price: $99/mo for 20,000 credits ($4.95 per 1,000, down to $2.00 on Enterprise)
Free option: Free single lookups via the online tools at 1lookup.io/tools, no account required
Where it wins: 76 data products on one API key and one credit balance: phone, email and IP checks, people and company data, social data and more

See 1Lookup pricing 7-day free trial

2. Twilio Lookup

Best if you already build on Twilio

Pick Twilio Lookup when your stack already runs on Twilio for SMS or voice and you want phone intelligence billed and managed inside the same platform.

Starting price: $0.008 per request for Line Type Intelligence (cheapest paid data package; no monthly minimum), Caller Name is $0.01/request (US only), Identity Match $0.10/request
Free option: Phone number formatting and validation lookups are free (no published cap); SMS Pumping Risk Score is free for NAMER (North America) numbers ($0.025/request rest of world)
The catch: Phone-only product - no email or IP validation; those require separate vendors or products

1Lookup vs Twilio Lookup: full comparison

3. Vonage (Nexmo)

Best carrier-network signals inside a full communications platform

Pick Vonage (Nexmo) when you already build on Vonage for SMS or voice, or you need carrier-sourced signals such as SIM swap and roaming status next to OTP delivery in one account.

Starting price: Identity Insights API, pay per request: Number Format no cost; Original Carrier $0.00117 (EUR 0.001) per request; Current Carrier $0.00819 (EUR 0.007) per request; SIM Swap and Subscriber Match vary by country
Free option: Pricing page: "Start developing now with free credit. No credit card required." (credit amount not stated on that page; the July read of the help center said EUR 2 with trial-mode sending limits)
The catch: Number Insight API sunsets February 4, 2027; Vonage directs customers to migrate to the Identity Insights API

1Lookup vs Vonage (Nexmo): full comparison

4. Veriphone

Best minimal phone validation API with a generous free tier

Pick Veriphone when you want a tiny, simple phone validation endpoint for format and line-type checks and free volume matters more than data depth.

Starting price: $12.99/mo (Starter) for 10,000 credits/mo; cheapest one-time pack is $24 for 10,000 credits
Free option: 1,000 free credits/month on every account, no credit card required; includes full carrier and line-type data, API and bulk CSV
The catch: Phone validation only - no email or IP verification products

1Lookup vs Veriphone: full comparison

5. Numverify (APILayer)

Best lowest-cost paid entry for basic phone format checks

Pick Numverify (APILayer) when you need simple syntax and carrier metadata at very low cost and can accept static-database lookups rather than live carrier checks.

Starting price: $14.99/mo for 5,000 API requests (Basic plan; overage $0.011992 per extra request)
Free option: 100 API requests/mo free, no time limit, non-commercial use only, no support
The catch: Validation is based on international numbering-plan/format databases (syntax, carrier, line-type data), the pricing page does not advertise live carrier/HLR reachability checks of whether a number is currently active

1Lookup vs Numverify (APILayer): full comparison

This table compares all 5 on the same criteria.

Product	Starting price	Free option
1Lookup	$99/mo for 20,000 credits ($4.95 per 1,000, down to $2.00 on Enterprise)	Free single lookups via the online tools at 1lookup.io/tools, no account required
Twilio Lookup	$0.008 per request for Line Type Intelligence (cheapest paid data package; no monthly minimum), Caller Name is $0.01/request (US only), Identity Match $0.10/request	Phone number formatting and validation lookups are free (no published cap); SMS Pumping Risk Score is free for NAMER (North America) numbers ($0.025/request rest of world)
Vonage (Nexmo)	Identity Insights API, pay per request: Number Format no cost; Original Carrier $0.00117 (EUR 0.001) per request; Current Carrier $0.00819 (EUR 0.007) per request; SIM Swap and Subscriber Match vary by country	Pricing page: "Start developing now with free credit. No credit card required." (credit amount not stated on that page; the July read of the help center said EUR 2 with trial-mode sending limits)
Veriphone	$12.99/mo (Starter) for 10,000 credits/mo; cheapest one-time pack is $24 for 10,000 credits	1,000 free credits/month on every account, no credit card required; includes full carrier and line-type data, API and bulk CSV
Numverify (APILayer)	$14.99/mo for 5,000 API requests (Basic plan; overage $0.011992 per extra request)	100 API requests/mo free, no time limit, non-commercial use only, no support

Prices verified from each vendor’s public pricing page as of October 2026. Pricing models differ (subscriptions, pay-as-you-go credits, per-lookup metering), so compare at your real monthly volume; the full per-vendor volume tables are on each linked comparison page.

This is who should choose each one.

1Lookup: Best all-in-one: 76 data products on one API key and one credit balance.
Twilio Lookup: Best if you already build on Twilio.
Vonage (Nexmo): Best carrier-network signals inside a full communications platform.
Veriphone: Best minimal phone validation API with a generous free tier.
Numverify (APILayer): Best lowest-cost paid entry for basic phone format checks.

This is how much work a switch takes.

Separate the two jobs TeleSign may be doing for you. Phone intelligence migrates in an afternoon: swap endpoints, remap response fields, and re-baseline any risk-score thresholds. Verification and messaging flows (OTP delivery, SMS) are a different product category and should move to a messaging platform on their own schedule.

These are the questions people ask about TeleSign alternatives.

What is the best TeleSign alternative?

1Lookup is the closest swap for self-serve phone intelligence without an enterprise sales motion: carrier, line type, a risk level, and Do Not Call status on every validation, plus spam flags and live HLR status on the same key, at less than half TeleSign's list price per lookup. Twilio Lookup and Vonage make sense if you already run messaging on those platforms, and Veriphone and numverify cover basic validation.

How is TeleSign priced?

Pay-as-you-go, per-transaction metered billing with no monthly fees or contracts, and a free trial with test credits. Richer lookups, such as subscriber name and address, cost substantially more per transaction than basic number intelligence. Verified per-transaction rates are in the comparison table above.

Why do teams switch away from TeleSign?

TeleSign is built for enterprise identity and risk programs, and it shows in the buying experience: the product surface is broad, richer data points carry premium per-transaction prices, and the platform assumes you are integrating verification, messaging, and risk together. Teams that just need phone intelligence often want something simpler.

How hard is it to migrate off TeleSign?

For lookup workloads, it is an endpoint swap plus field remapping, and phone lookups are stateless so nothing historical has to move. If you also use TeleSign for SMS verification or messaging, migrate those flows separately onto your messaging provider, since a validation API does not replace OTP delivery.

Try 1Lookup free for 7 days before you decide.

The 7-day free trial includes credits for all 76 data products: $5 on Starter, $20 on Growth and above. No payment today.

Start your free trial 1Lookup vs TeleSign in depth