`centyry21.com`

DNSSEC	⚠️ Not signed
A	3.21.30.236^{🇺🇸 Amazon3.20.0.0/14 EC2 CMH prefix}
		PTR	`ec2-3-21-30-236.us-east-2.compute.amazonaws.com`
A	3.138.52.249^{🇺🇸 Amazon3.136.0.0/13 EC2 CMH prefix}
NS	`ns-478.awsdns-59.com` ⭐
		A	2600:9000:5301:de00::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-478.awsdns-59.com`
		A	205.251.193.222^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-478.awsdns-59.com`
NS	`ns-1395.awsdns-46.org`
		A	2600:9000:5305:7300::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1395.awsdns-46.org`
		A	205.251.197.115^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1395.awsdns-46.org`
NS	`ns-1876.awsdns-42.co.uk`
		A	2600:9000:5307:5400::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1876.awsdns-42.co.uk`
		A	205.251.199.84^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1876.awsdns-42.co.uk`
NS	`ns-588.awsdns-09.net`
		A	2600:9000:5302:4c00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-588.awsdns-09.net`
		A	205.251.194.76^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-588.awsdns-09.net`
SOA	`ns-478.awsdns-59.com`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=1778319996

Same first word

centyry21.com

DNS History

23 records (6 active, 17 former)

●NSns-1395.awsdns-46.org2019-03-23 → 2026-05-09 · 3 obs

○ 2017-01-26 19:03:40
● 2019-03-23 16:48:42
● 2026-05-09 09:58:48

●NSns-1876.awsdns-42.co.uk2019-03-23 → 2026-05-09 · 3 obs

○ 2017-01-26 19:03:40
● 2019-03-23 16:48:42
● 2026-05-09 09:58:48

●NSns-478.awsdns-59.com2019-03-23 → 2026-05-09 · 3 obs

○ 2017-01-26 19:03:40
● 2019-03-23 16:48:42
● 2026-05-09 09:58:48

●NSns-588.awsdns-09.net2019-03-23 → 2026-05-09 · 3 obs

○ 2017-01-26 19:03:40
● 2019-03-23 16:48:42
● 2026-05-09 09:58:48

○NSns1.savvis.net2008-03-20 → 2017-01-26 · 4 obs

● 2008-03-20 01:59:58
● 2017-01-26 19:03:40
○ 2019-03-23 16:48:42
○ 2026-05-09 09:58:48

○NSns2.savvis.net2008-03-20 → 2017-01-26 · 4 obs

● 2008-03-20 01:59:58
● 2017-01-26 19:03:40
○ 2019-03-23 16:48:42
○ 2026-05-09 09:58:48

○NSns3.savvis.net2008-03-20 → 2017-01-26 · 4 obs

● 2008-03-20 01:59:58
● 2017-01-26 19:03:40
○ 2019-03-23 16:48:42
○ 2026-05-09 09:58:48

○NSns4.savvis.net2015-07-03 → 2017-01-26 · 5 obs

○ 2008-03-20 01:59:58
● 2015-07-03 18:36:48
● 2017-01-26 19:03:40
○ 2019-03-23 16:48:42
○ 2026-05-09 09:58:48

○NSns5.savvis.net2015-07-03 → 2017-01-26 · 5 obs

○ 2008-03-20 01:59:58
● 2015-07-03 18:36:48
● 2017-01-26 19:03:40
○ 2019-03-23 16:48:42
○ 2026-05-09 09:58:48

○NSns6.savvis.net2008-03-20 → 2008-03-20 · 3 obs

● 2008-03-20 01:59:58
○ 2015-07-03 18:36:48
○ 2026-05-09 09:58:48

○A13.58.85.892026-02-22 → 2026-02-23 · 5 obs

○ 2019-03-23 16:48:42
● 2026-02-22 02:20:18
● 2026-02-23 06:23:52
○ 2026-03-04 10:52:24
○ 2026-05-09 09:58:48

○A18.188.66.142019-03-23 → 2019-03-23 · 3 obs

● 2019-03-23 16:48:42
○ 2026-02-22 02:20:18
○ 2026-05-09 09:58:48

○A18.218.212.1862026-04-19 → 2026-04-19 · 4 obs

○ 2026-03-30 07:45:22
● 2026-04-19 09:29:30
○ 2026-05-09 09:58:46
○ 2026-05-09 09:58:48

○A18.219.169.932019-03-23 → 2019-03-23 · 3 obs

● 2019-03-23 16:48:42
○ 2026-02-22 02:20:18
○ 2026-05-09 09:58:48

○A3.130.67.2082026-03-04 → 2026-03-08 · 5 obs

○ 2026-02-23 06:23:52
● 2026-03-04 10:52:24
● 2026-03-08 22:32:30
○ 2026-03-30 07:45:22
○ 2026-05-09 09:58:48

○A3.132.195.922026-03-06 → 2026-03-08 · 5 obs

○ 2026-03-04 10:52:24
● 2026-03-06 06:54:38
● 2026-03-08 22:32:30
○ 2026-03-30 07:45:22
○ 2026-05-09 09:58:48

○A3.137.7.1562026-03-30 → 2026-03-30 · 4 obs

○ 2026-03-08 22:32:30
● 2026-03-30 07:45:22
○ 2026-04-19 09:29:30
○ 2026-05-09 09:58:48

○A3.138.148.532026-03-04 → 2026-03-04 · 4 obs

○ 2026-02-23 06:23:52
● 2026-03-04 10:52:24
○ 2026-03-06 06:54:38
○ 2026-05-09 09:58:48

●A3.138.52.2492026-05-09 → 2026-05-09 · 3 obs

○ 2026-04-19 09:29:30
● 2026-05-09 09:58:46
● 2026-05-09 09:58:48

○A3.147.185.2182026-02-22 → 2026-02-23 · 5 obs

○ 2019-03-23 16:48:42
● 2026-02-22 02:20:18
● 2026-02-23 06:23:52
○ 2026-03-04 10:52:24
○ 2026-05-09 09:58:48

○A3.18.210.2052026-03-30 → 2026-03-30 · 4 obs

○ 2026-03-08 22:32:30
● 2026-03-30 07:45:22
○ 2026-04-19 09:29:30
○ 2026-05-09 09:58:48

○A3.19.231.1642026-04-19 → 2026-04-19 · 4 obs

○ 2026-03-30 07:45:22
● 2026-04-19 09:29:30
○ 2026-05-09 09:58:46
○ 2026-05-09 09:58:48

●A3.21.30.2362026-05-09 → 2026-05-09 · 3 obs

○ 2026-04-19 09:29:30
● 2026-05-09 09:58:46
● 2026-05-09 09:58:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
centyry21.com	ns-588.awsdns-09.net, ns-478.awsdns-59.com, ns-1876.awsdns-42.co.uk, ns-1395.awsdns-46.org	2 records

✅ Authoritative Response

Server:205.251.194.76

NS records: ns-588.awsdns-09.net, ns-478.awsdns-59.com, ns-1876.awsdns-42.co.uk, ns-1395.awsdns-46.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for centyry21.com (unsigned zone)

⏱️ Timing

Total: 712ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`3.21.30.236, 3.138.52.249`
NS	4	`ns-1395.awsdns-46.org, ns-1876.awsdns-42.co.uk...`
SOA	1	`ns-478.awsdns-59.com awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-478.awsdns-59.com, ns-478.awsdns-59.com)

Analysis

IP Addresses

centyry21.com points to two IP numbers: 3.21.30.236 and 3.138.52.249.

Other host names, for instance c21smoothmove.com, century21southcarolina.com, century21homeimprovements.info, century21newjersey.com and century21thomasrealty.com share IP numbers with centyry21.com.

Name Servers

centyry21.com is delegated to four name servers: ns-478.awsdns-59.com, ns-588.awsdns-09.net, ns-1395.awsdns-46.org and ns-1876.awsdns-42.co.uk.

centyry21.com shares name servers with other domains at least partially, for instance protogetic.com, bible.is, d1vboessd37wvy.cloudfront.net, jbigdigital-notices.com and eagleharborllc.com.

Host names with two IP numbers:

ns-478.awsdns-59.com resolves to 2600:9000:5301:de00::1 and 205.251.193.222.

ns-588.awsdns-09.net resolves to 2600:9000:5302:4c00::1 and 205.251.194.76.

ns-1395.awsdns-46.org resolves to 2600:9000:5305:7300::1 and 205.251.197.115.

ns-1876.awsdns-42.co.uk resolves to 2600:9000:5307:5400::1 and 205.251.199.84.

centyry21.com - robtex.com

centyry21.com

com

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

`centyry21.com`

`com`