Phone lookups
LookValid vs Abstract API
LookValid covers part of the same ground as Abstract API with Phone Numbering-Plan Validation, Carrier Lookup (original carrier), Email Domain Check, IP Intelligence, billed in credits from one shared balance. Abstract API prices each API (email, phone and IP) on its own subscription meter, with every plan returning a different depth of data and annual billing 10 percent cheaper than monthly. Each API has a small free tier.
Side by side
| Term | Abstract API | LookValid |
|---|---|---|
| What it sells | Phone number lookups. | Phone Numbering-Plan Validation, Carrier Lookup (original carrier), Email Domain Check, IP Intelligence |
| How it bills | Subscription | Monthly credit plans, one balance for every lookup |
| Entry price | $19 (Phone Validation Starter: per month paid monthly, 5,000 phone requests) Source | 1 credit per valid number |
| Lowest per 1,000 | $0.085 (IP Geolocation Starter) Source | $2.00 to $4.95 for 1,000 billed Phone Numbering-Plan Validation lookups across the plans |
| Free option | Free tier of 100 requests a month for email and phone, 1,000 for IP, with the full response and no card. Source | Free tools run the same data without an account, up to 25 lookups a day per visitor. |
| API access | Every plan, including free, returns the API response for that plan's data depth. Source | One REST API and one MCP server, both on the same key and the same credit balance. |
| Rate limits | Free plans allow 3 requests a second on email and phone and 1 on IP; paid IP plans allow 10 a second. Source | 200 requests per 10 seconds on each key, on every plan. A repeat lookup within 7 days is free. |
What Abstract API publishes
| Plan or product | Price | Covers | Per 1,000 |
|---|---|---|---|
| Phone Validation Starter | $19 | per month paid monthly, 5,000 phone requests | about $3.80 |
| Phone Validation Standard | $19 | per month paid monthly, 3,000 phone requests with messaging data | about $6.33 |
| Phone Validation Professional | $19 | per month paid monthly, 2,000 phone requests with risk data | about $9.50 |
| Email Validation Starter | $17 | per month billed annually, 5,000 email requests | $3.40 |
| Email Validation Standard | $37 | per month, 5,000 email requests with sender and domain data | about $7.40 |
| Email Validation Professional | $39 | per month, 5,000 email requests with quality, risk and breach data | about $7.80 |
| IP Geolocation Starter | $17 | per month billed annually, 200,000 IP requests | $0.085 |
Limits Abstract API states
What LookValid offers in the same area
| Product | Credits | Docs |
|---|---|---|
| Phone Numbering-Plan Validation | 1 credit per valid number | API docs |
| Carrier Lookup (original carrier) | 1 credit per lookup (numbers outside the covered numbering plan areas are free) | API docs |
| Email Domain Check | 1 credit per address checked | API docs |
| IP Intelligence | 1 credit per lookup | API docs |
- Phone Numbering-Plan Validation: Validates a number against its numbering plan: format, country, number type and area. It does not ping the line. About $2.00 to $4.95 for 1,000 billed lookups across the plans.
- Carrier Lookup (original carrier): Names the carrier that holds the number block, for the numbering-plan areas it covers. About $2.00 to $4.95 for 1,000 billed lookups across the plans.
- Email Domain Check: Checks the domain behind an address: whether it can receive mail, how its DNS is set up, and what kind of provider it is. It does not test whether one mailbox exists. About $2.00 to $4.95 for 1,000 billed lookups across the plans.
- IP Intelligence: Locates an IP address and reads its network and risk flags. About $2.00 to $4.95 for 1,000 billed lookups across the plans.
Pricing explains credits and the plans.
Which to choose
Abstract API and LookValid overlap only in part. Phone Numbering-Plan Validation: Validates a number against its numbering plan: format, country, number type and area. It does not ping the line. Carrier Lookup (original carrier): Names the carrier that holds the number block, for the numbering-plan areas it covers. Email Domain Check: Checks the domain behind an address: whether it can receive mail, how its DNS is set up, and what kind of provider it is. It does not test whether one mailbox exists. IP Intelligence: Locates an IP address and reads its network and risk flags.
Choose Abstract API when the job is phone number lookups as Abstract API sells it. Choose LookValid when the checks above are what you need, with one key and one credit balance for phone, email, IP and website lookups.
Questions
What is Abstract API?
Abstract API prices each API (email, phone and IP) on its own subscription meter, with every plan returning a different depth of data and annual billing 10 percent cheaper than monthly. Each API has a small free tier.
What does Abstract API cost?
Phone Validation Starter is listed at $19 (per month paid monthly, 5,000 phone requests) on the page we read on 2026-10-18. The lowest per-1,000 figure there is $0.085 for IP Geolocation Starter.
How is Abstract API different from LookValid?
Abstract API sells phone number lookups. LookValid sells Phone Numbering-Plan Validation, Carrier Lookup (original carrier), Email Domain Check, IP Intelligence and bills every lookup in credits from one balance.
Can I try Abstract API for free?
Free tier of 100 requests a month for email and phone, 1,000 for IP, with the full response and no card.
Sources
- Pricing page on abstractapi.com https://www.abstractapi.com/pricing, read 2026-10-18
- Home page on abstractapi.com https://www.abstractapi.com, read 2026-10-18
Other phone lookups providers
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