21cfr.com - robtex.com
21cfr.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns07.domaincontrol.com ⚠️ Not in zone NS records | ||||||
| A | 2603:5:2170::4🇺🇸 GODADDY-DNS2603:5:2170::/44 | ||||||
| PTR | ns07.domaincontrol.com | ||||||
| A | 97.74.103.4🇺🇸 GODADDY-DNS97.74.102.0/23 | ||||||
| PTR | ns07.domaincontrol.com | ||||||
| NS | ns08.domaincontrol.com ⚠️ Not in zone NS records | ||||||
| A | 2603:5:2270::4🇺🇸 GODADDY-DNS2603:5:2270::/44 | ||||||
| PTR | ns08.domaincontrol.com | ||||||
| A | 173.201.71.4🇺🇸 GODADDY-DNS173.201.70.0/23 | ||||||
| PTR | ns08.domaincontrol.com | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1771291435 | ||||||
Subdomains
Same first word
Similar names
DNS History
14 records (2 active, 12 former)
○NSns.21cfr.com2015-05-31 → 2015-12-15 · 4 obs
● 2015-12-15 04:57:02
○ 2016-03-23 14:10:00
○ 2026-03-23 15:17:06
●NSns07.domaincontrol.com2026-03-13 → 2026-03-23 · 3 obs
● 2026-03-13 22:45:02
● 2026-03-23 15:17:06
●NSns08.domaincontrol.com2026-03-13 → 2026-03-23 · 3 obs
● 2026-03-13 22:45:02
● 2026-03-23 15:17:06
○NSns1.21cfr.com2026-03-13 → 2026-03-23 · 2 obs
○ 2026-03-23 15:17:06
○NSns2.21cfr.com2015-05-31 → 2015-12-15 · 4 obs
● 2015-12-15 04:57:02
○ 2016-03-23 14:10:00
○ 2026-03-23 15:17:06
○NSpdns07.domaincontrol.com2016-03-23 → 2017-03-29 · 5 obs
● 2016-03-23 14:10:00
● 2017-03-29 17:50:28
○ 2026-03-13 22:45:02
○ 2026-03-23 15:17:06
○NSpdns08.domaincontrol.com2016-03-23 → 2017-03-29 · 5 obs
● 2016-03-23 14:10:00
● 2017-03-29 17:50:28
○ 2026-03-13 22:45:02
○ 2026-03-23 15:17:06
○MXmailstore1.secureserver.net2015-05-31 → 2017-03-29 · 4 obs
● 2017-03-29 17:50:28
○ 2026-03-13 22:45:02
○ 2026-03-23 15:17:06
○MXmx.21cfr.com2026-03-13 → 2026-03-23 · 2 obs
○ 2026-03-23 15:17:06
○MXsmtp.secureserver.net2015-05-31 → 2017-03-29 · 4 obs
● 2017-03-29 17:50:28
○ 2026-03-13 22:45:02
○ 2026-03-23 15:17:06
○A184.168.193.432015-12-15 → 2017-03-29 · 5 obs
● 2015-12-15 04:57:02
● 2017-03-29 17:50:28
○ 2026-03-13 22:45:02
○ 2026-03-23 15:17:06
○A192.227.121.1032026-03-13 → 2026-03-23 · 2 obs
○ 2026-03-23 15:17:06
○A198.71.196.732015-09-21 → 2015-09-21 · 4 obs
● 2015-09-21 16:29:06
○ 2015-12-15 04:57:02
○ 2026-03-23 15:17:06
○A72.167.81.1982015-05-31 → 2015-05-31 · 3 obs
○ 2015-09-21 16:29:06
○ 2026-03-23 15:17:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 21cfr.com | ns07.domaincontrol.com, ns08.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:97.74.103.4
NS records: ns07.domaincontrol.com, ns08.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21cfr.com (unsigned zone)
⏱️ Timing
Total: 107ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns07.domaincontrol.com, ns07.domaincontrol.com, ns08.domaincontrol.com...)
Analysis
Hierarchy
21cfr.com is a parent of ns2.21cfr.com and ns1.21cfr.com.
Name Servers
21cfr.com is delegated to two name servers ns07.domaincontrol.com and ns08.domaincontrol.com.
21cfr.com shares the same name server setup as other domains, for instance krings.us, bcprof.com, passportnewmedia.ca, sv-lindau.de and lepore.biz.
Host names with two IP numbers:
The host name ns07.domaincontrol.com points to 2603:5:2170::4 and 97.74.103.4; the host name ns08.domaincontrol.com points to 2603:5:2270::4 and 173.201.71.4.