WHOIS डोमेन लुकअप
आधुनिक WHOIS प्रोटोकॉल, RDAP का उपयोग करके जांचें कि डोमेन किसने पंजीकृत किया है, यह कब समाप्त होता है, इसके नेमसर्वर और DNSSEC स्थिति क्या है।
डोमेन पंजीकरण विवरण खोजें
Data retrieved via Registration Data Access Protocol (RDAP) RFC 7480-7484. Under ICANN specifications and GDPR data protection regulations, personal registrant contact information is redacted by registries.
WHOIS, RDAP के रूप में आधुनिक
पंजीकरण डेटा आपको डोमेन के रजिस्ट्रार, मुख्य तिथियां और नेमसर्वर बताता है, जो तब उपयोगी होता है जब आप माइग्रेशन की योजना बनाते हैं, समाप्ति तिथि ट्रैक करते हैं, या किसी डोमेन की जांच करते हैं। यह टूल RDAP का उपयोग करता है, जो port-43 WHOIS का संरचित JSON उत्तराधिकारी है जिसे रजिस्ट्रियों के लिए समर्थित करना आवश्यक है।
यह टूल आपको क्या प्रदान करता है
- किसी डोमेन के लिए रजिस्ट्रार, पंजीकरण, अंतिम बार परिवर्तन और समाप्ति की तिथियां।
- नेमसर्वर, डोमेन स्थिति कोड और DNSSEC साइनिंग स्थिति।
- एक स्पष्ट संकेत जब कोई डोमेन अपंजीकृत दिखता है और उपलब्ध हो सकता है।
EPP domain status codes reference
EPP (Extensible Provisioning Protocol) status codes define the administrative locks and operational state of a domain name across registrars and registries:
| Status code | Applied by | Meaning & security impact |
|---|---|---|
| clientTransferProhibited | Registrar | Prevents unauthorized transfer requests to another registrar (anti-hijacking lock). |
| clientUpdateProhibited | Registrar | Locks DNS nameservers and contact information from being modified without unlocking. |
| clientDeleteProhibited | Registrar | Protects the domain against accidental deletion requests. |
| serverHold | Registry | Suspends DNS resolution at the registry level (e.g. pending legal dispute or non-payment). |
| ok / active | Registry | Standard operational status with no pending actions or restrictions. |
Domain & SSL requirements for venue WiFi captive portals
When configuring custom domains for guest WiFi splash pages and network access control (NAC), adhere to these best practices:
- Dedicated Hostname: Delegate a dedicated subdomain (such as
wifi.venue.comorguest.brand.com) via CNAME to your captive portal provider rather than using apex domains. - Automated TLS/SSL Provisioning: Ensure the domain has a valid, unexpired public SSL certificate signed by a trusted Certificate Authority (CA). Self-signed certificates cause instant browser security blocks on iOS and Android.
- Authoritative DNS Resilience: Host your domain on redundant Anycast DNS nameservers to guarantee sub-millisecond captive portal resolution during peak venue footfall.
- DNSSEC Integrity: Enable DNSSEC at your registrar to validate that guest login requests cannot be intercepted or spoofed by malicious local access points.
Frequently asked questions about WHOIS & RDAP
What is RDAP and how does it replace traditional port-43 WHOIS?
RDAP (Registration Data Access Protocol, RFC 7480-7484) is the standardized JSON-over-HTTPS protocol designed by the IETF and ICANN to succeed legacy port-43 WHOIS. Unlike unstructured plaintext WHOIS queries, RDAP provides machine-readable JSON responses, internationalized domain name (IDN) support, secure transport layer encryption (HTTPS), and standardized privacy redaction for GDPR compliance.
How do I check if a domain has DNSSEC enabled?
DNSSEC (Domain Name System Security Extensions) adds cryptographic signatures to DNS records to protect against DNS spoofing and cache poisoning. In this tool, the DNSSEC status queries the top-level domain (TLD) registry for active DS (Delegation Signer) records. A 'Signed' result indicates active cryptographic delegation.
What do EPP status codes like clientTransferProhibited and clientDeleteProhibited mean?
EPP (Extensible Provisioning Protocol) status codes indicate the operational and lock states of a domain name. Codes starting with 'client' (such as clientTransferProhibited, clientUpdateProhibited, and clientDeleteProhibited) are registrar-level security locks that prevent unauthorized transfers, domain hijacking, and accidental deletions.
Why are registrant personal contact details redacted in WHOIS lookups?
Under ICANN's Temporary Specification and global data protection laws (such as GDPR and CCPA), registries and registrars are legally mandated to redact personal identifying information - including registrant names, street addresses, and phone numbers - from public queries. Registrars provide anonymized web forms or privacy relays for legitimate technical inquiries.
Why is domain and DNS verification essential for guest WiFi captive portals?
Enterprise guest WiFi captive portals require fully qualified domain names (FQDNs) and valid SSL/TLS certificates (e.g. splash.yourvenue.com) to establish secure HTTPS connections without triggering browser security warnings or Apple/Android Captive Network Assistant (CNA) failures. Redundant authoritative nameservers and active DNSSEC prevent DNS resolution failures during guest login.
Related WiFi tools
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