Signal House pricing: phone validation API
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44% complete: 4 of the 9 fields on our checklistSee the 9 fields
$0.00per 1,000 phonesIn our phone validation API benchmark, the best plan from Signal House scores 60.7 out of 100. Signal House ranks 2nd of 58 providers.This plan is free. We rank 1,330 plans for phone validation APIs by price. Half the plans cost $3.834 or less per 1,000 phones. See the best free phone validation API plan.GuGuData's CNY 124 (about $19) monthly plan is the cheapest paid plan per 1,000 phones. GuGuData's CNY 124 (about $19) monthly plan charges nothing per call. You get as many phones as GuGuData's rate limit allows. UAPI's CNY 4.90 pack costs the least for 10,000 phones a month: about $0.73.Trestle, Signal House and Data247 are the best phone validation API providers in the Datacircle benchmark.
Plan: Free credit one of Signal House's 3 plans
Call:
POST / Signal House's only callAPI: Phone validation API Signal House's only API
About this item
- Live. Signal House checks the phone number you send when you call the API.
- 4 of the 9 fields on our checklist. Number, Type, Carrier, Porting and roaming.
- Nothing to pay. You get $25 of credit once, enough for 5,000 calls.
- One call. You send
phoneNumbertoPOST /.message/ carrier-id - Who can get it: anyone who creates an account. Keep data: no limit. Use data: with conditions.
Signal House: phone validation API alternatives
Signal House alternatives: every phone validation API provider ranked
The table starts with Signal House's cheapest paid plan. Next come plans from other providers with the price per 1,000 phones closest to Signal House's. Each plan in the table gives live data.
| Signal House, top-up from $10 | CallerAPI, $25 monthly, Basic, GET /api/network-lookup/{phone} | ProWebLook, $250 pack, WhatsApp One-Time 50K, GET /wavalidation | iBlueText, top-up, Pay-as-you-go lookup credits | SignalWire, top-up from $5, Prepaid balance, GET /api/relay/rest/lookup/phone_number/{e164_number}, Look up phone number | |
|---|---|---|---|---|---|
| $ per 1,000 phones | $5.00 | $5.00 | $5.00 | $5.00 | $5.00 |
| Completeness | 44% | 44% | 67% | 11% | 67% |
| Billing | pay first | monthly | pay first | pay first | pay first |
| Pay | $10 | $25 | $250 | any amount | $5 |
| Enough for | as many as you pay for | 5,000 calls a month | 50,000 calls | as many as you pay for | 1,000 calls |
| Freshness | live | live | live | live | live |
| Who can get it | anyone who creates an account | anyone with a Google account | anyone | anyone at least 18 with authority to bind their business, who verifies their phone number | anyone with a SignalWire space and a payment method, new accounts stay in Trial mode until at least $5 of credit is added |
Sources
From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-09.
Product details
The key fields this plan's answer can hold, then each filled column in its row on the sheet.
- Number
- Formats, not in the answer
- Validity, not in the answer
- Type
- Carrier
- Porting and roaming
- Place, not in the answer
- Risk, not in the answer
- Owner, not in the answer
| $ per 1,000 phones | $0.00 |
|---|---|
| Per | call |
| Billing | free |
| Aggregators | none |
|---|
| Also pays for | from the same budget: POST /message/sms · POST /message/mms · POST /message/groupMessage · POST /message/rcs · POST /message/p2p · POST /number |
|---|
| $ per 1,000 | $0.00 |
|---|
| Their pitch | Look up the carrier for a phone number. Always performs a fresh lookup (not cached). Billed per request. |
|---|
| Freshness | live |
|---|---|
| What it checks | carrier |
| Keep data | no limit |
| Use data | You are granted a limited, non-exclusive, non-transferable, and revocable license to use the Services for your internal business purposes. [...] You shall not use the Platform, or any information derived from the Platform, to design, develop, build, replicate, enhance, or assist in the creation of any product, service, workflow, platform, or system that is competitive with or substantially similar to the Platform or any of its components, whether for internal use, commercial use, or for the benefit of any third party. [...] Except for the limited right to use the Services for their intended internal business purposes in accordance with these Terms, you shall not, and shall not permit any third party to: Copy, reproduce, duplicate, republish, scrape, download, distribute, display, or create derivative works from any Platform Materials. [...] Use any information learned from access to the Services to build, improve, advise on, or support any competing product or service. |
| Pay | $0 |
|---|---|
| You get | $25 |
| Enough for | 5,000 calls, once |
| Batch | 1 |
|---|
| Answer | in the call |
|---|---|
| Median | 0.34 s |
| You send | phoneNumber |
|---|---|
| Method | POST |
| Path | /message/carrier-id |
| Plan | Free credit |
|---|---|
| Who can get it | anyone who creates an account |
The 8 fields the plan's answer can hold
number, carrier name, carrier family, carrier region, ported, line type, degraded confidence, lookup cost