`c21international.com`

DNSSEC	⚠️ Not signed
A	76.223.5.249^{🇺🇸 Amazon76.223.0.0/20}
		PTR	`a2391dc0304a99e02.awsglobalaccelerator.com`
A	166.117.1.52^{🇺🇸 Amazon166.117.0.0/20}
NS	`ns-1634.awsdns-12.co.uk` ⭐
		A	2600:9000:5306:6200::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1634.awsdns-12.co.uk`
		A	205.251.198.98^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1634.awsdns-12.co.uk`
NS	`ns-1226.awsdns-25.org`
		A	2600:9000:5304:ca00::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1226.awsdns-25.org`
		A	205.251.196.202^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1226.awsdns-25.org`
NS	`ns-374.awsdns-46.com`
		A	2600:9000:5301:7600::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-374.awsdns-46.com`
		A	205.251.193.118^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-374.awsdns-46.com`
NS	`ns-589.awsdns-09.net`
		A	2600:9000:5302:4d00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-589.awsdns-09.net`
		A	205.251.194.77^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-589.awsdns-09.net`
SOA	`ns-1634.awsdns-12.co.uk`awsdns-hostmaster@amazon.com serial=1

`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.net`nstld@verisign-grs.com serial=1778522431

Same first word

c21international.com

Similar names

21cinternational.com

DNS History

13 records (6 active, 7 former)

●NSns-1226.awsdns-25.org2026-05-05 → 2026-05-11 · 3 obs

○ 2017-05-20 04:57:54
● 2026-05-05 12:27:14
● 2026-05-11 18:10:20

●NSns-1634.awsdns-12.co.uk2026-05-05 → 2026-05-11 · 3 obs

○ 2017-05-20 04:57:54
● 2026-05-05 12:27:14
● 2026-05-11 18:10:20

●NSns-374.awsdns-46.com2026-05-05 → 2026-05-11 · 3 obs

○ 2017-05-20 04:57:54
● 2026-05-05 12:27:14
● 2026-05-11 18:10:20

●NSns-589.awsdns-09.net2026-05-05 → 2026-05-11 · 3 obs

○ 2017-05-20 04:57:54
● 2026-05-05 12:27:14
● 2026-05-11 18:10:20

○NSns1.lamedelegation.net2007-11-05 → 2007-11-05 · 3 obs

● 2007-11-05 09:20:30
○ 2015-06-17 06:21:38
○ 2026-05-11 18:10:20

○NSns2.lamedelegation.net2007-11-05 → 2007-11-05 · 3 obs

● 2007-11-05 09:20:30
○ 2015-06-17 06:21:38
○ 2026-05-11 18:10:20

○NSns77.worldnic.com2015-06-17 → 2017-05-20 · 5 obs

○ 2007-11-05 09:20:30
● 2015-06-17 06:21:38
● 2017-05-20 04:57:54
○ 2026-05-05 12:27:14
○ 2026-05-11 18:10:20

○NSns78.worldnic.com2015-06-17 → 2017-05-20 · 5 obs

○ 2007-11-05 09:20:30
● 2015-06-17 06:21:38
● 2017-05-20 04:57:54
○ 2026-05-05 12:27:14
○ 2026-05-11 18:10:20

○MXp.webcom.ctmail.com2016-01-19 → 2017-05-20 · 4 obs

● 2016-01-19 03:40:16
● 2017-05-20 04:57:54
○ 2026-05-05 12:27:14
○ 2026-05-11 18:10:20

●A166.117.1.522026-05-05 → 2026-05-11 · 3 obs

○ 2017-05-20 04:57:54
● 2026-05-05 12:27:14
● 2026-05-11 18:10:20

○A205.178.189.1312015-06-17 → 2017-05-20 · 5 obs

○ 2007-11-05 09:20:30
● 2015-06-17 06:21:38
● 2017-05-20 04:57:54
○ 2026-05-05 12:27:14
○ 2026-05-11 18:10:20

○A209.62.20.1882007-11-05 → 2007-11-05 · 3 obs

● 2007-11-05 09:20:30
○ 2015-06-17 06:21:38
○ 2026-05-11 18:10:20

●A76.223.5.2492026-05-05 → 2026-05-11 · 3 obs

○ 2017-05-20 04:57:54
● 2026-05-05 12:27:14
● 2026-05-11 18:10:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, g.gtld-servers.net, f.gtld-servers.net, i.gtld-servers.net...	-
c21international.com	ns-589.awsdns-09.net, ns-374.awsdns-46.com, ns-1634.awsdns-12.co.uk, ns-1226.awsdns-25.org	2 records

✅ Authoritative Response

Server:205.251.198.98

NS records: ns-589.awsdns-09.net, ns-374.awsdns-46.com, ns-1634.awsdns-12.co.uk, ns-1226.awsdns-25.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for c21international.com (unsigned zone)

⏱️ Timing

Total: 352ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`166.117.1.52, 76.223.5.249`
NS	4	`ns-1226.awsdns-25.org, ns-1634.awsdns-12.co.uk...`
SOA	1	`ns-1634.awsdns-12.co.uk awsdns-hostmaste`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-374.awsdns-46.com, ns-374.awsdns-46.com)

Analysis

IP Addresses

c21international.com points to two IP numbers: 76.223.5.249 and 166.117.1.52.

Other host names, for instance century21unitednorthside.com, cbcnrtchicago.com, coldwellbankerluxurylistings.com, jpsothebysrealty.net and metrochicagohomes.com share IP numbers with c21international.com.

Name Servers

c21international.com is delegated to four name servers: ns-374.awsdns-46.com, ns-589.awsdns-09.net, ns-1226.awsdns-25.org and ns-1634.awsdns-12.co.uk.

c21international.com at least partially shares name servers with other domains, for instance ecommercebrasil.shop, richlist.info, pdo.aws.gartner.com, marwj.com and savvyescapes.com.

Host names with two IP numbers:

ns-374.awsdns-46.com points to: 2600:9000:5301:7600::1 and 205.251.193.118.

ns-589.awsdns-09.net points to: 2600:9000:5302:4d00::1 and 205.251.194.77.

ns-1226.awsdns-25.org points to: 2600:9000:5304:ca00::1 and 205.251.196.202.

ns-1634.awsdns-12.co.uk points to: 2600:9000:5306:6200::1 and 205.251.198.98.

c21international.com - robtex.com