# 1s2u, $35 pack: Phone validation API

> HLR Lookups is a global technology to check status of any mobile phone number.

1s2u's phone validation API on its "10,000 HLR" plan. It costs $3.50 per 1,000 phones. 1s2u's docs list 6 of the 9 key fields we check: Number, Validity, Type, Carrier, Porting and roaming, Place.
We haven't run 1s2u through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
Half of the 1,097 plans we rank by price cost $2.998 per 1,000 phones or less. This plan costs less per 1,000 phones than 48% of the 1,097 plans.
[GuGuData's CNY 124 monthly plan](https://datacircle.dev/validate-phone-apis/gugudata/cny-124-monthly/llms.txt) is the cheapest paid plan per 1,000 phones. GuGuData's CNY 124 monthly plan charges nothing per call. You get as many phones as GuGuData's rate limit allows.
[Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone/llms.txt), [Abstract API](https://datacircle.dev/validate-phone-apis/abstract-api/19-monthly-starter-5000-requests-month/llms.txt) and [Foxentry](https://datacircle.dev/validate-phone-apis/foxentry/top-up-pay-as-you-go-post-phone-validate-validate-phone-number-extended/llms.txt) are the best phone validation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-phone-apis/1s2u/35-pack
- [Phone validation API: the best of 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://1s2u.com/hlr_lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `GET https://api.1s2u.io/hlr`
- API key: with the plan, on https://1s2u.com/hlr_lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://1s2u.com/sms-developers?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing#subcontent-11
- Sold by: 1s2u (https://1s2u.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-05

## In the answer

- Completeness: 67%
- Number: ✓
- Validity: ✓
- Type: ✓
- Carrier: ✓
- Porting and roaming: ✓
- Place: ✓

## Price

- $ per 1,000 phones: $3.50
- Per: result
- Billing: pay first

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Overage

- Units cap: hard

## In their words

- Their pitch: HLR Lookups is a global technology to check status of any mobile phone number.

## Data

- Freshness: live
- Countries: Worldwide
- What it checks: carrier, line in service
- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: $35
- You get: 10,000 credits
- Enough for: 10,000 results

## Rate limit

- Batch: 30

## Speed

- Answer: in the call

## The call

- You send: msisdn
- Method: GET
- Path: /hlr

## About the plan

- Plan: 10,000 HLR
- Who can get it: anyone

## The 10 fields the plan's answer can hold

phone number, country, line status, carrier, line type, MCC and MNC, roaming, ported, error code, status

## 1s2u's plans (4)

- [1s2u, $35 pack](https://datacircle.dev/validate-phone-apis/1s2u/35-pack/llms.txt): $3.50 per 1,000, 67% complete, live
- [1s2u, $150 pack](https://datacircle.dev/validate-phone-apis/1s2u/150-pack/llms.txt): $3.00 per 1,000, 67% complete, live
- [1s2u, $500 pack](https://datacircle.dev/validate-phone-apis/1s2u/500-pack/llms.txt): $2.50 per 1,000, 67% complete, live
- [1s2u, $1,000 pack](https://datacircle.dev/validate-phone-apis/1s2u/1000-pack/llms.txt): $2.00 per 1,000, 67% complete, live

## 1s2u's calls (1)

- `GET /hlr`: [1s2u, $35 pack](https://datacircle.dev/validate-phone-apis/1s2u/35-pack/llms.txt)

## 1s2u's APIs (1)

- [1s2u: phone validation API pricing, 4 plans](https://datacircle.dev/validate-phone-apis/1s2u/35-pack/llms.txt)

## 1s2u: phone validation API alternatives

- [Veriphone, $990 yearly, Business, GET /v3/verify, /v3/verify, full](https://datacircle.dev/validate-phone-apis/veriphone/990-yearly-business-get-v3-verify-v3-verify-full/llms.txt): $3.30 per 1,000, 78% complete, live
- [CallerAPI, $1,000 monthly, Enterprise transparency $1,000, GET /api/network-lookup/{phone}](https://datacircle.dev/validate-phone-apis/callerapi/1000-monthly-enterprise-transparency-1000-get-api-network-lookup-phone/llms.txt): $3.333 per 1,000, 44% complete, live
- [HLR Lookups, top-up from €22,500, 7.5M - 10M, POST /mnp-lookup](https://datacircle.dev/validate-phone-apis/hlr-lookups/top-up-from-22500-7-5m-10m-post-mnp-lookup/llms.txt): $3.376 per 1,000, 44% complete, live
- [HLR Lookup, £1,350 pack, 500,000 lookups, POST /batches/{id}/sourcejson, Bulk uploads via API](https://datacircle.dev/validate-phone-apis/hlr-lookup/1350-pack-500000-lookups-post-batches-id-sourcejson/llms.txt): $3.600 per 1,000, 89% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-05.

- https://1s2u.com/hlr_lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://1s2u.com/sms-developers?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://1s2u.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing