Blog

July 21, 2026 · 6 min read

# The server is right here, and it answers:
curl -s https://rdap.identitydigital.services/rdap/domain/git.io | jq '.ldhName'
# "git.io"

# Ask bootstrap — the standard way to find it — and it shrugs:
curl -s -o /dev/null -w '%{http_code}\n' https://rdap.org/domain/example.io
# 404

July 18, 2026 · 6 min read

curl -s https://rdap.verisign.com/com/v1/domain/google.com | jq '{
  ldhName,
  registrar: (.entities[0].vcardArray[1][] | select(.[0] == "fn") | .[3]),
  registrar_iana_id: .entities[0].publicIds[0].identifier,
  related: [.links[] | select(.rel == "related") | .href]
}'

July 9, 2026 · 14 min read

"status": [
  "client delete prohibited", "client transfer prohibited", "client update prohibited",
  "server delete prohibited", "server transfer prohibited", "server update prohibited"
]

May 11, 2026 · 11 min read

{
  "handle": "2138514_DOMAIN_COM-VRSN",
  "ldhName": "GOOGLE.COM",
  "status": [
    "client delete prohibited", "client transfer prohibited", "client update prohibited",
    "server delete prohibited", "server transfer prohibited", "server update prohibited"
  ],
  "nameservers": [
    { "ldhName": "NS1.GOOGLE.COM" },
    { "ldhName": "NS2.GOOGLE.COM" },

April 24, 2026 · 7 min read

{
  "objectClassName": "autnum",
  "handle": "AS13335",
  "name": "CLOUDFLARENET",
  "startAutnum": 13335,
  "endAutnum": 13335,
  "entities": [
    {
      "objectClassName": "entity",
      "handle": "CLOUD14",

April 14, 2026 · 6 min read

curl https://rdap.verisign.com/com/v1/domain/example.com

April 1, 2026 · 10 min read

{
  "domain": "google.com",
  "status": ["client delete prohibited", "server transfer prohibited"],
  "registrar": {
    "name": "MarkMonitor Inc.",
    "iana_id": "292",
    "abuse_email": "[email protected]"
  },
  "dates": {
    "registered": "1997-09-15T04:00:00Z",

March 26, 2026 · 8 min read

import dns.resolver  # pip install dnspython

def is_registered_dns(domain):
    try:
        dns.resolver.resolve(domain, "NS")
        return True
    except (dns.resolver.NXDOMAIN, dns.resolver.NoAnswer):
        return False
    except dns.resolver.NoNameservers:
        return False  # Or True — ambiguous

March 15, 2026 · 5 min read

import whois  # pip install python-whois

w = whois.whois("web.dev")
# stderr: Error trying to connect to socket: closing socket - nodename nor servname provided
w.registrar        # None
w.expiration_date  # None

March 10, 2026 · 5 min read

import requests
import time

def rdap_lookup(url, max_retries=3):
    for _ in range(max_retries):
        resp = requests.get(url, headers={"User-Agent": "MyApp/1.0"})

        if resp.status_code == 200:
            return resp.json()

March 4, 2026 · 9 min read

{
  "objectClassName": "domain",
  "handle": "891022_DOMAIN_COM-VRSN",
  "ldhName": "STRIPE.COM",
  "links": [...],
  "status": [...],
  "entities": [...],
  "events": [...],
  "nameservers": [...],
  "secureDNS": { "delegationSigned": false },

March 3, 2026 · 7 min read

# Registered domain — returns 200 with JSON
curl -s -o /dev/null -w "%{http_code}" \
  https://rdap.verisign.com/com/v1/domain/google.com
# 200

# Unregistered domain — returns 404
curl -s -o /dev/null -w "%{http_code}" \
  https://rdap.verisign.com/com/v1/domain/xyznotregistered123456.com
# 404

March 2, 2026 · 9 min read

{
  "objectClassName": "ip network",
  "handle": "NET-8-8-8-0-2",
  "startAddress": "8.8.8.0",
  "entities": [
    {
      "objectClassName": "entity",
      "handle": "GOGL",
      "roles": ["registrant"],
      "vcardArray": [

March 1, 2026 · 4 min read

# Our domains
mycompany.com
mycompany.io
myproduct.dev
mybrand.org

# Watch list
competitor.com

February 28, 2026 · 2 min read

curl -X POST https://rdapapi.io/api/v1/domains/bulk \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"domains": ["google.com", "github.com", "example.net"]}'

February 27, 2026 · 8 min read

[
  {
    "eventAction": "registration",
    "eventDate": "1997-09-15T04:00:00Z"
  },
  {
    "eventAction": "expiration",
    "eventDate": "2028-09-14T04:00:00Z"
  },
  {

February 26, 2026 · 7 min read

{
  "domain": "google.com",
  "status": ["client delete prohibited", "server transfer prohibited"],
  "registrar": {
    "name": "MarkMonitor Inc.",
    "iana_id": "292",
    "abuse_email": "[email protected]"
  },
  "dates": {
    "registered": "1997-09-15T04:00:00Z",

February 25, 2026 · 9 min read

[
  "vcard",
  [
    ["version", {}, "text", "4.0"],
    ["fn", {}, "text", "REDACTED REGISTRANT"],
    ["org", {"type": "work"}, "text", "Google LLC"],
    ["adr", {"cc": "US"}, "text",
      ["", "", "REDACTED FOR PRIVACY", "REDACTED FOR PRIVACY", "", "REDACTED FOR PRIVACY", ""]
    ],
    ["tel", {"type": "voice"}, "text", "REDACTED FOR PRIVACY"],

February 24, 2026 · 6 min read

import os
from rdapapi import RdapApi

api = RdapApi(os.environ["RDAP_API_KEY"])

February 23, 2026 · 5 min read

{
  "domain": "google.com",
  "status": ["client delete prohibited", "server transfer prohibited", "..."],
  "registrar": {
    "name": "MarkMonitor Inc.",
    "iana_id": "292",
    "abuse_email": "[email protected]",
    "url": "http://www.markmonitor.com"
  },
  "dates": {