ns21.itclark.com - robtex.com
ns21.itclark.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2600:9000:5300:fb00::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront | ||||||
| PTR | ns-251.awsdns-31.com | ||||||
| A | 205.251.192.251🇺🇸 Amazon205.251.192.0/24 prefix | ||||||
itclark.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 199.79.190.196🇺🇸 LOGIX-1199.79.190.0/24 2GuysColo | ||||||
| NS | ns21.itclark.com ⭐ | ||||||
| NS | ns22.itclark.com | ||||||
| NS | ns23.itclark.com | ||||||
| NS | ns24.itclark.com | ||||||
| MX | aspmx.l.google.com ⭐ | ||||||
| MX | alt1.aspmx.l.google.com(5) | ||||||
| MX | alt2.aspmx.l.google.com(5) | ||||||
| MX | aspmx2.googlemail.com(10) | ||||||
| MX | aspmx3.googlemail.com(10) | ||||||
| MX | efa.itclark.com(100) | ||||||
| TXT | v=spf1 include:_spf.itclark.com ~all | ||||||
| SOA | ns21.itclark.comhostmaster@itclark.com 2018-09-24 #0 | ||||||
NS for
Same first word
ns21.cn |
ns21.tube |
ns21.com |
ns21.de |
ns21.ru |
ns21.org |
ns21.tv |
ns21.net |
ns21.fra1-de.cloudjiffy.net |
ns21.es |
ns21.club |
ns21.cc |
ns21.online |
ns21.jp |
ns21.ne.jp |
Similar names
DNS History
2 records (2 active, 0 former)
●A205.251.192.2512026-02-16 → 2026-04-25 · 2 obs
● 2026-02-16 06:45:20
● 2026-04-25 04:12:52
● 2026-04-25 04:12:52
●A2600:9000:5300:fb00::12026-02-16 → 2026-04-25 · 2 obs
● 2026-02-16 06:45:20
● 2026-04-25 04:12:52
● 2026-04-25 04:12:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| itclark.com | ns21.itclark.com, ns22.itclark.com, ns23.itclark.com, ns24.itclark.com | 8 records |
✅ Authoritative Response
Server:205.251.195.172
NS records: ns21.itclark.com, ns22.itclark.com, ns23.itclark.com, ns24.itclark.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for itclark.com (unsigned zone)
⏱️ Timing
Total: 181ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 205.251.192.251 |
| AAAA | 1 | 2600:9000:5300:fb00::1 |
📌 Glue Records Collected
Total: 8
In-bailiwick: 8 (ns21.itclark.com, ns21.itclark.com, ns22.itclark.com...)
Analysis
Name Server Role
ns21.itclark.com serves as the name server for itclark.com.
ns22.itclark.com, ns23.itclark.com and ns24.itclark.com are commonly used as name servers along with ns21.itclark.com.
IP Addresses
ns21.itclark.com points to two IP numbers: 2600:9000:5300:fb00::1 and 205.251.192.251.
Other host names such as r01-04.ns.twtrdns.net, ns2.readwhere.net, dns.scalagrp.com, dnsps11.mercadolibre.com and ns-251.awsdns-31.com share IP numbers with ns21.itclark.com.