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Twilio Lookup API

twilio.com

API Try it
VerifiedResearched, not yet routed
Line type, carrier and number validation. Buying direct: Validation free; line type $0.008/request. Listed .
Capabilities
1
From
$0.008 / call
Calls, 30 days
71K
Ranked first
0 of 1

Overview

Researched from the vendor's own pages; every fact links to its source and the day we checked it.

Twilio Lookup v2: number validation and formatting, line type intelligence, line status, SMS pumping risk, SIM swap and identity match, billed per feature per request.

Company

Legal name
Not confirmed
Headquarters
San Francisco, United States
Founded
2008
Employees
Not confirmed
Ownership
Not confirmed
Kind
Infrastructure
Website
Not confirmed

API

Access
Self-serve API
Style
Not confirmed
Auth
HTTP Basic
Base URL
https://lookups.twilio.com/v2
Features
Bulk —Async —Webhooks —MCP —Sandbox —
SDKs
Node.jsPythonJavaC#PHPRubyGo
Rate limit
Not confirmed
Docs
Reference

Pricing

Model
pay as you go
List prices
  • Line type intelligence $0.008/request
  • Line status $0.007/request (tiered)
  • Identity match $0.10/request
Currency
USD
Free tier
Not confirmed
Checked
Sep 29, 2026

Compliance

SOC 2
Not confirmed
GDPR
Not confirmed
CCPA
Not confirmed
DPA
Not confirmed
Resale / storage
Unknown until a written agreement says otherwise

Relationships

Integrations
Not confirmed
Alternatives
None named by the vendor
Sources (3)

Placement in the Grid

Where this vendor sits on the GridRouter Grid in each category it serves. No vendor pays for placement.

Placement in the GridRouter Grid by category
CategoryPlacementExecuteCoverageCallsReport
PhoneLeaders98.656.371KView Grid

Endpoints

What Twilio Lookup does through GridRouter, and how each endpoint ranks against the other providers of that capability.

CapabilityRankPriceFill rateAccuracyp50Per verified hitLeader
Phone line typephone.lookup · n=71K
Verified Benchmarked BYOK
Rank 1of 1$0.008per call97.0%99.5%210 ms$0.0083Leads this board

Pricing

The price per call you pay through GridRouter, and what one verified hit costs once misses are counted. Failed calls are free; calls on your own vendor key are never metered.

CapabilityList priceUnitPer verified hitYour own key
Phone line typephone.lookup$0.008per call$0.0083Free, not metered

Performance

Fill rate is the share of calls that found what was asked for; accuracy is the share of hits confirmed correct; latency is measured at the gateway. Trailing 30 days.

CapabilityFill rateAccuracySuccessp50p95Samples
Phone line typephone.lookup97.0%99.5%99.9%210 ms640 ms71K

Uptime

Share of calls without a vendor-side failure (errors, timeouts, capacity). Caller mistakes and refusals don't count against a vendor. Last 30 days, daily.

Sample dataIllustrative figures from the catalog's quality samples until live traffic is published

  • Twilio Lookupphone.lookup
    Uptime
    99.6%
    p50 / p95
    210 ms640 ms
    Calls
    62.2K

Apps

Public apps that identify themselves with X-Grid-App or HTTP-Referer and X-Title, over the last 30 days.

All apps

No public app has listed itself here yet. Add two headers to get yours ranked.

Activity

Routed calls per day over the last 30 days.

Calls per day by capability62.2K calls
  • Phone line type
Calls per day by capability
DayPhone line type
Aug 28, 20262804
Aug 29, 20261124
Aug 30, 20261122
Aug 31, 20262409
Sep 1, 20262385
Sep 2, 20262861
Sep 3, 20262828
Sep 4, 20262026
Sep 5, 20261129
Sep 6, 20261136
Sep 7, 20262515
Sep 8, 20262387
Sep 9, 20262092
Sep 10, 20262657
Sep 11, 20262675
Sep 12, 20261045
Sep 13, 20261337
Sep 14, 20262383
Sep 15, 20262521
Sep 16, 20262308
Sep 17, 20262408
Sep 18, 20262421
Sep 19, 20261182
Sep 20, 20261083
Sep 21, 20262306
Sep 22, 20262494
Sep 23, 20262716
Sep 24, 20262097
Sep 25, 20262684
Sep 26, 20261047

API

One request shape for every vendor: call phone.lookup and let GridRouter route it, or pin Twilio Lookup with the provider route.

Inputs for phone.lookup
InputDescription
phone*E.164 number (required)
Request
curl https://api.gridrouter.io/v1/call/phone.lookup \
  -H "Authorization: Bearer $GRID_KEY" \
  -d '{"phone":"+14155550123","route":"best_value"}'
Official specOpenAPI 3.0.1 · 10 operations Spec (YAML)Vendor's spec
Operations in the twilio-lookup spec
MethodPathSummaryParamsSource
GET/v2/PhoneNumbers/{PhoneNumber}Full API documentation: https://www.twilio.com/docs/lookup/v2-api16Spec
POST/v2/batch/queryIn Request Bulk0Spec
GET/v2/RateLimitsGet account rate limits1Spec
GET/v2/RateLimits/Fields/{Field}/Bucket/{Bucket}Get rate limit2Spec
PUT/v2/RateLimits/Fields/{Field}/Bucket/{Bucket}Upsert rate limit2Spec
DELETE/v2/RateLimits/Fields/{Field}/Bucket/{Bucket}Delete rate limit2Spec
GET/v2/PhoneNumbers/{PhoneNumber}/Overrides/{Field}Get Overrides for a Phone Number for a specific field.2Spec
POST/v2/PhoneNumbers/{PhoneNumber}/Overrides/{Field}Create Override for a Phone Number for a specific field2Spec
PUT/v2/PhoneNumbers/{PhoneNumber}/Overrides/{Field}Update Override for a Phone Number for a specific field2Spec
DELETE/v2/PhoneNumbers/{PhoneNumber}/Overrides/{Field}Delete an Override for a Phone Number for a specific field2Spec

Rate limits

No published rate limits found. Without a published limit GridRouter paces conservatively (1 request per second).

Twilio Lookup reviews

  • Rated 5.0 out of 5Agent6,000 verified calls
    Run before every dial list. Removed 11% landlines and 3% invalid numbers from a 6,000-row list for $48.
    dialer-prep, Custom agent, outbound call teamTwilio Lookupphone.lookup

Twilio Lookup questions

How much does the Twilio Lookup API cost through GridRouter?

phone line type at $0.008 per call, charged from prepaid credits at the provider's rate. Buying direct is Validation free; line type $0.008/request.

Where does Twilio Lookup rank?

Twilio Lookup doesn't rank first for any capability this month; see each table below for where it leads on individual metrics.

Can I bring my own Twilio Lookup key?

Yes. Add it once in the vault; calls on your key are never metered and still count toward the quality scores.

Compare Twilio Lookup