`21realestate.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-578.awsdns-08.net` ⭐
		A	2600:9000:5302:4200::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-578.awsdns-08.net`
		A	205.251.194.66^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-578.awsdns-08.net`
NS	`ns-1281.awsdns-32.org`
		A	2600:9000:5305:100::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1281.awsdns-32.org`
		A	205.251.197.1^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1281.awsdns-32.org`
NS	`ns-1700.awsdns-20.co.uk`
		A	2600:9000:5306:a400::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1700.awsdns-20.co.uk`
		A	205.251.198.164^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1700.awsdns-20.co.uk`
NS	`ns-428.awsdns-53.com`
		A	2600:9000:5301:ac00::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-428.awsdns-53.com`
		A	205.251.193.172^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-428.awsdns-53.com`
SOA	`ns-578.awsdns-08.net`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=1778529836

Same first word

21realestate.com

DNS History

11 records (6 active, 5 former)

●NSns-1281.awsdns-32.org2017-12-16 → 2026-05-11 · 3 obs

○ 2016-09-21 02:22:54
● 2017-12-16 08:09:18
● 2026-05-11 20:08:28

●NSns-1700.awsdns-20.co.uk2017-12-16 → 2026-05-11 · 3 obs

○ 2016-09-21 02:22:54
● 2017-12-16 08:09:18
● 2026-05-11 20:08:28

●NSns-428.awsdns-53.com2017-12-16 → 2026-05-11 · 3 obs

○ 2016-09-21 02:22:54
● 2017-12-16 08:09:18
● 2026-05-11 20:08:28

●NSns-578.awsdns-08.net2017-12-16 → 2026-05-11 · 3 obs

○ 2016-09-21 02:22:54
● 2017-12-16 08:09:18
● 2026-05-11 20:08:28

○NSns1.savvis.net2015-06-02 → 2016-09-21 · 4 obs

● 2015-06-02 16:21:50
● 2016-09-21 02:22:54
○ 2017-12-16 08:09:18
○ 2026-05-11 20:08:28

○NSns2.savvis.net2015-06-02 → 2016-09-21 · 4 obs

● 2015-06-02 16:21:50
● 2016-09-21 02:22:54
○ 2017-12-16 08:09:18
○ 2026-05-11 20:08:28

○NSns3.savvis.net2015-06-02 → 2016-09-21 · 4 obs

● 2015-06-02 16:21:50
● 2016-09-21 02:22:54
○ 2017-12-16 08:09:18
○ 2026-05-11 20:08:28

○NSns6.savvis.net2015-06-02 → 2016-09-21 · 4 obs

● 2015-06-02 16:21:50
● 2016-09-21 02:22:54
○ 2017-12-16 08:09:18
○ 2026-05-11 20:08:28

●A3.138.52.2492026-05-05 → 2026-05-11 · 2 obs

● 2026-05-05 12:19:46
● 2026-05-11 20:08:28

●A3.21.30.2362026-05-08 → 2026-05-11 · 3 obs

○ 2026-05-05 12:19:46
● 2026-05-08 06:47:54
● 2026-05-11 20:08:28

○A3.23.162.842026-05-05 → 2026-05-05 · 3 obs

● 2026-05-05 12:19:46
○ 2026-05-08 06:47:54
○ 2026-05-11 20:08:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, c.gtld-servers.net, l.gtld-servers.net, a.gtld-servers.net...	-
21realestate.com	ns-578.awsdns-08.net, ns-428.awsdns-53.com, ns-1700.awsdns-20.co.uk, ns-1281.awsdns-32.org	2 records

✅ Authoritative Response

Server:205.251.194.66

NS records: ns-578.awsdns-08.net, ns-428.awsdns-53.com, ns-1700.awsdns-20.co.uk, ns-1281.awsdns-32.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21realestate.com (unsigned zone)

⏱️ Timing

Total: 1424ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`3.21.30.236, 3.138.52.249`
NS	4	`ns-1281.awsdns-32.org, ns-1700.awsdns-20.co.uk...`
SOA	1	`ns-578.awsdns-08.net awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-428.awsdns-53.com, ns-428.awsdns-53.com)

Analysis

IP Addresses

21realestate.com points to two IP numbers: 3.21.30.236 and 3.138.52.249.

Other host names, for instance century21commercialinvestment.com, century21mortgage.info, century21massachusetts.com, century21sucasa.com and century21oregon.com share IP numbers with 21realestate.com.

Name Servers

21realestate.com is delegated to four name servers: ns-428.awsdns-53.com, ns-578.awsdns-08.net, ns-1281.awsdns-32.org and ns-1700.awsdns-20.co.uk.

21realestate.com at least partially shares its name servers with other domains, for instance foxize.com, forvalt.no, acelerapyme.es, dunloppneus.net and webflow-site-rel.com.

these name servers are commonly used with the name servers ns-722.awsdns-26.net, ns-1043.awsdns-02.org, ns-1869.awsdns-41.co.uk, ns-152.awsdns-19.com, ns-890.awsdns-47.net and ns-1768.awsdns-29.co.uk.

Host names with two IPs: ns-428.awsdns-53.com points to 2600:9000:5301:ac00::1 and 205.251.193.172; ns-578.awsdns-08.net points to 2600:9000:5302:4200::1 and 205.251.194.66; ns-1281.awsdns-32.org points to 2600:9000:5305:100::1 and 205.251.197.1; ns-1700.awsdns-20.co.uk points to 2600:9000:5306:a400::1 and 205.251.198.164.

21realestate.com - robtex.com