21st-cf.org - robtex.com
21st-cf.org
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1776062913 | ||||||
Same first word
DNS History
10 records (2 active, 8 former)
●NSdns1.cscdns.net2026-04-09 → 2026-04-13 · 3 obs
● 2026-04-09 11:30:08
● 2026-04-13 07:00:46
●NSdns2.cscdns.net2026-04-09 → 2026-04-13 · 3 obs
● 2026-04-09 11:30:08
● 2026-04-13 07:00:46
○NSns1.markmonitor.com2020-02-25 → 2020-02-25 · 3 obs
○ 2026-04-09 11:30:08
○ 2026-04-13 07:00:46
○NSns2.markmonitor.com2020-02-25 → 2020-02-25 · 3 obs
○ 2026-04-09 11:30:08
○ 2026-04-13 07:00:46
○NSns3.markmonitor.com2020-02-25 → 2020-02-25 · 3 obs
○ 2026-04-09 11:30:08
○ 2026-04-13 07:00:46
○NSns4.markmonitor.com2020-02-25 → 2020-02-25 · 3 obs
○ 2026-04-09 11:30:08
○ 2026-04-13 07:00:46
○NSns5.markmonitor.com2020-02-25 → 2020-02-25 · 3 obs
○ 2026-04-09 11:30:08
○ 2026-04-13 07:00:46
○NSns6.markmonitor.com2020-02-25 → 2020-02-25 · 3 obs
○ 2026-04-09 11:30:08
○ 2026-04-13 07:00:46
○NSns7.markmonitor.com2020-02-25 → 2020-02-25 · 3 obs
○ 2026-04-09 11:30:08
○ 2026-04-13 07:00:46
○A72.52.10.142020-02-25 → 2020-02-25 · 3 obs
○ 2026-04-09 11:30:08
○ 2026-04-13 07:00:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | c0.org.afilias-nst.info, d0.org.afilias-nst.org, a0.org.afilias-nst.info, a2.org.afilias-nst.info... | - |
| 21st-cf.org | dns2.cscdns.net, dns1.cscdns.net | - |
✅ Authoritative Response
Server:156.154.130.100
NS records: dns2.cscdns.net, dns1.cscdns.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21st-cf.org (unsigned zone)
⏱️ Timing
Total: 370ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dns1.cscdns.net, dns2.cscdns.net |
| SOA | 1 | dns1.cscdns.net hostmaster.cscdns.net |
Analysis
Name Servers
21st-cf.org's delegation is to two name servers dns1.cscdns.net and dns2.cscdns.net.
21st-cf.org shares the same name server configuration as other domains, such as orange-business.dk, closurenotsofast.com, ottobockcare.mx, vospers.co.nz and trysharkapex.com.
21st-cf.org shares name servers with other domains to some extent, for instance fiacreditcardonline.com, coontrywidebank.net, carolinaherrera.biz and veluxfondene.dk.
These name servers are commonly used alongside ns101.bac.com and ns102.bac.com.
Host names with two IP numbers: dns1.cscdns.net points to 2610:a1:1022::100 and 156.154.130.100; dns2.cscdns.net points to 2610:a1:1023::100 and 156.154.131.100