ARIN · RIPE · APNIC · LACNIC · AFRINIC

WHOIS Data

Full parsed WHOIS records for any IP address or domain. RIR allocation data, organization details, network block info, and contact records — all in clean JSON.

Try Free — 50K req/mo View API Docs

350M+

IP records indexed

5 RIRs

Global registries covered

Daily

Database refreshed

<50ms

Average API latency

API Response Examples

See exactly what data you get per plan. More fields unlock as you scale up.

GET https://api.hostinfo.com/whois/8.8.8.8 Lite 
{
  "ip": "8.8.8.8",
  "org": "AS15169 Google LLC",
  "country": "US",
  "rir": "ARIN",
  "asn": "AS15169",
  "netname": "GOOGLE",
  "cidr": "8.8.8.0/24"
}

Data Fields

Every field available in the WHOIS API response

Network Registration

ip IP address queried
org Organization name + ASN
netname WHOIS network name
cidr CIDR prefix (e.g. 8.8.8.0/24)
inetnum Full IP range allocated
country ISO 2-letter country code
rir Regional Internet Registry
registration_date Original allocation date
last_modified Last WHOIS update date

Contact & Advanced (Core+)

abuse_email Abuse reporting contact email
admin_email Administrative contact
tech_email Technical contact (Plus+)
parent_network Parent CIDR block (Plus+)
allocation_history Change history array (Plus+)
raw_whois Raw WHOIS text (Max)
all_networks All prefixes for the org (Max)
rpki_status RPKI validation status (Max)
irt Incident response team record (Max)

Simple, Scalable Pricing

Start free, scale as you grow. All plans include the WHOIS endpoint.

Lite

$0Free forever

  • ✓ 50K requests/month
  • ✓ 7 fields per response
  • ✓ REST JSON API
Start Free

Core

$49per month

  • ✓ 500K requests/month
  • ✓ 12 fields per response
  • ✓ REST JSON API
  • ✓ Email support
Get Started
Most Popular

Plus

$149per month

  • ✓ 2M requests/month
  • ✓ 16 fields per response
  • ✓ REST JSON API
  • ✓ Priority support
Get Started

Max

$299per month

  • ✓ 10M requests/month
  • ✓ All fields per response
  • ✓ REST JSON API
  • ✓ Dedicated support
Get Started

Need higher volume? Contact us for Enterprise — custom limits, SLA, and dedicated support.

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