`21st-cf.info`

DNSSEC	⚠️ Not signed
NS	`dns1.cscdns.net` ⭐
		A	2610:a1:1022::100^{🇺🇸 MAINT-ID-120082610:a1:1022::/48 Neustar}
			PTR	`ns1.arcemus.com`
			PTR	`kandns06.digitalarchives.com`
			PTR	`ns1.euro909.com`
			PTR	`ns2.euro909.com`
			PTR	`indom10.indomco.com`
			PTR	`indom30.indomco.fr`
			PTR	`ns1.ascio.net`
			PTR	`ns3.ascio.net`
			PTR	`dns1.cscdns.net`
			PTR	`pdns1.cscdns.net`
			PTR	`sbdns3.cscdns.net`
			PTR	`spdns3.cscdns.net`
			PTR	`ns0.netnames.net`
			PTR	`ns1.netnames.net`
			PTR	`ns3.netnames.net`
			PTR	`ns5.netnames.net`
			PTR	`ns7.netnames.net`
			PTR	`indom130.indomco.org`
			PTR	`ns2.domainnetwork.se`
			PTR	`ns.domainnetwork.se`
		A	156.154.130.100^{🇺🇸 MAINT-ID-12008156.154.130.0/24 Neustar}
			PTR	`ns1.arcemus.com`
			PTR	`kandns06.digitalarchives.com`
			PTR	`ns1.euro909.com`
			PTR	`ns2.euro909.com`
			PTR	`indom10.indomco.com`
			PTR	`indom30.indomco.fr`
			PTR	`ns1.ascio.net`
			PTR	`ns3.ascio.net`
			PTR	`dns1.cscdns.net`
			PTR	`pdns1.cscdns.net`
			PTR	`sbdns3.cscdns.net`
			PTR	`spdns3.cscdns.net`
			PTR	`ns0.netnames.net`
			PTR	`ns1.netnames.net`
			PTR	`ns3.netnames.net`
			PTR	`ns5.netnames.net`
			PTR	`ns7.netnames.net`
			PTR	`indom130.indomco.org`
			PTR	`ns2.domainnetwork.se`
			PTR	`ns.domainnetwork.se`
NS	`dns2.cscdns.net`
		A	2610:a1:1023::100^{🇺🇸 MAINT-ID-120082610:a1:1023::/48 Neustar}
			PTR	`ns2.arcemus.com`
			PTR	`nusdns06.digitalarchives.com`
			PTR	`ns3.domainnetwork.com`
			PTR	`ns3.euro909.com`
			PTR	`indom80.indomco.hk`
			PTR	`ns2.ascio.net`
			PTR	`ns4.ascio.net`
			PTR	`dns2.cscdns.net`
			PTR	`pdns2.cscdns.net`
			PTR	`indom20.indomco.net`
			PTR	`ns2.netnames.net`
			PTR	`ns4.netnames.net`
			PTR	`ns6.netnames.net`
			PTR	`ns8.netnames.net`
		A	156.154.131.100^{🇺🇸 MAINT-ID-12008156.154.131.0/24 Neustar}
			PTR	`ns2.arcemus.com`
			PTR	`nusdns06.digitalarchives.com`
			PTR	`ns3.domainnetwork.com`
			PTR	`ns3.euro909.com`
			PTR	`indom80.indomco.hk`
			PTR	`ns2.ascio.net`
			PTR	`ns4.ascio.net`
			PTR	`dns2.cscdns.net`
			PTR	`pdns2.cscdns.net`
			PTR	`indom20.indomco.net`
			PTR	`ns2.netnames.net`
			PTR	`ns4.netnames.net`
			PTR	`ns6.netnames.net`
			PTR	`ns8.netnames.net`
SOA	`dns1.cscdns.net`hostmaster@cscdns.net 2020-03-18 #2

`info`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.info.afilias-nst.info` ⭐
	NS	`a2.info.afilias-nst.info`
	NS	`b0.info.afilias-nst.org` ⚠️ Not in parent delegation
	NS	`b2.info.afilias-nst.org` ⚠️ Not in parent delegation
	NS	`c0.info.afilias-nst.info`
	NS	`d0.info.afilias-nst.org` ⚠️ Not in parent delegation
	SOA	`a0.info.afilias-nst.info`hostmaster@donuts.email serial=1776062059

Same first word

21st-cf.biz

21st-cf.org

21st-cf.info

21st-cf.com

21st-cf.net

DNS History

10 records (2 active, 8 former)

●NSdns1.cscdns.net2026-04-09 → 2026-04-13 · 3 obs

○ 2020-02-08 12:08:52
● 2026-04-09 12:00:38
● 2026-04-13 06:55:46

●NSdns2.cscdns.net2026-04-09 → 2026-04-13 · 3 obs

○ 2020-02-08 12:08:52
● 2026-04-09 12:00:38
● 2026-04-13 06:55:46

○NSns1.markmonitor.com2020-02-08 → 2020-02-08 · 3 obs

● 2020-02-08 12:08:52
○ 2026-04-09 12:00:38
○ 2026-04-13 06:55:46

○NSns2.markmonitor.com2020-02-08 → 2020-02-08 · 3 obs

● 2020-02-08 12:08:52
○ 2026-04-09 12:00:38
○ 2026-04-13 06:55:46

○NSns3.markmonitor.com2020-02-08 → 2020-02-08 · 3 obs

● 2020-02-08 12:08:52
○ 2026-04-09 12:00:38
○ 2026-04-13 06:55:46

○NSns4.markmonitor.com2020-02-08 → 2020-02-08 · 3 obs

● 2020-02-08 12:08:52
○ 2026-04-09 12:00:38
○ 2026-04-13 06:55:46

○NSns5.markmonitor.com2020-02-08 → 2020-02-08 · 3 obs

● 2020-02-08 12:08:52
○ 2026-04-09 12:00:38
○ 2026-04-13 06:55:46

○NSns6.markmonitor.com2020-02-08 → 2020-02-08 · 3 obs

● 2020-02-08 12:08:52
○ 2026-04-09 12:00:38
○ 2026-04-13 06:55:46

○NSns7.markmonitor.com2020-02-08 → 2020-02-08 · 3 obs

● 2020-02-08 12:08:52
○ 2026-04-09 12:00:38
○ 2026-04-13 06:55:46

○A72.52.10.142020-02-08 → 2020-02-08 · 3 obs

● 2020-02-08 12:08:52
○ 2026-04-09 12:00:38
○ 2026-04-13 06:55:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
info	a2.info.afilias-nst.info, c0.info.afilias-nst.info, a0.info.afilias-nst.info	-
21st-cf.info	dns1.cscdns.net, dns2.cscdns.net	-

✅ Authoritative Response

Server:156.154.130.100

NS records: dns1.cscdns.net, dns2.cscdns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21st-cf.info (unsigned zone)

⏱️ Timing

Total: 97ms | 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.info is delegated to two name servers: dns1.cscdns.net and dns2.cscdns.net.

21st-cf.info uses the same name server setup as other domains such as bonusland.mobi, aigpassport.cn, 1800drapery.com, normstahl.com and super-hero-game.eu.

21st-cf.info shares name servers with other domains at least partially, for example krisflyer.es.

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.

21st-cf.info - robtex.com

21st-cf.info

info

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Name Servers

`21st-cf.info`

`info`