`www2.century21.com`

DNSSEC	⚠️ Not signed
A	3.33.168.255^{🇺🇸 Amazon3.33.160.0/20}
		PTR	`a5e6e5875811b641b.awsglobalaccelerator.com`
NS	`ns-1855.awsdns-39.co.uk` ⭐
		A	2600:9000:5307:3f00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1855.awsdns-39.co.uk`
		A	205.251.199.63^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1855.awsdns-39.co.uk`
NS	`ns-1082.awsdns-07.org`
		A	2600:9000:5304:3a00::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1082.awsdns-07.org`
		A	205.251.196.58^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1082.awsdns-07.org`
NS	`ns-471.awsdns-58.com`
		A	2600:9000:5301:d700::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-471.awsdns-58.com`
		A	205.251.193.215^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-471.awsdns-58.com`
NS	`ns-855.awsdns-42.net`
		A	2600:9000:5303:5700::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-855.awsdns-42.net`
		A	205.251.195.87^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-855.awsdns-42.net`
SOA	`ns-1855.awsdns-39.co.uk`awsdns-hostmaster@amazon.com serial=1

`century21.com`

	DNSSEC	⚠️ Not signed
	A	18.190.81.154^{🇺🇸 Amazon18.190.0.0/16 EC2 CMH prefix}
	A	18.190.202.132^{🇺🇸 Amazon18.190.0.0/16 EC2 CMH prefix}
	NS	`ns-1443.awsdns-52.org` ⭐
	NS	`ns-1874.awsdns-42.co.uk`
	NS	`ns-387.awsdns-48.com`
	NS	`ns-629.awsdns-14.net`
	MX	`usb-smtp-inbound-1.mimecast.com` ⭐
	MX	`usb-smtp-inbound-2.mimecast.com` ⭐
	TXT	`_globalsign-domain-verification=6GywlC8PVV6mLfL6ToMeVqCDeqFk9IDu2uEqmYPqx3`
	TXT	`atlassian-domain-verification=VU7xgQiZZa3avZ4LTJOsUdMn6RqZi0eGbU3Dk4MSPmi12S6...`
	TXT	`e80af3bf63eb43f0a51118582eb565fe`
	TXT	`facebook-domain-verification=p4r7ai7hqlnbzcott0uq5nrayy9yec`
	TXT	`google-site-verification=eC1QkIUk7oA0XpNCnb-3y0Dpua1xTDg1HtGv5D_wM-w`
	TXT	`mcfc2lrx5l41lh272qfv6nv8w8h3514r`
	TXT	`monday-com-verification=Vzp9M9wkXo140C0DRYV7ojmHp1rlhcE3dD23D45ox_s`
	TXT	`nQAI9/Mf/i7rU4sGIqrWfd9I7TXQgwhQa87qWZI+4pUNTHHJuZ/gX1ZqlWfAYhCnWLGWOOp0Fg1lS...`
	TXT	`pardot1074273=2b82518acdd71c332feed0ceaeadc1c2be67b4510570237c0f823db87e4d10b2`
	TXT	`pardot1074273=69a25332aabd2241ffd148220644eb8a26a8c22e84025481d5cf9df3741b5d85`
	TXT	`pardot1074273=d10fe431a3ffae55d8cad8645a55abfda9ce49ce739f57d7e5548e6b15efcd79`
	TXT	`pardot1074273=e8573c2e3702fa43c3ffc84b6a2c8c4fa5589037fd9cddd21ea8f7a618829080`
	TXT	`tjng5q051jrp6tkbptv7m6qvyl9rtntw`
	TXT	`v=spf1 include:spf.anywhere.re ~all`
	TXT	`xtfzlzs4srq28jg4gk4km1j648xjxnvt`
	SOA	`ns-1443.awsdns-52.org`awsdns-hostmaster@amazon.com serial=1

WOT: SAFE (87/100)
rank #17125 globally
rank #8388 in the tld
WOT: SAFE (87/100)
📈 Tranco rank: #22,841

Same first word

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DNS History

7 records (5 active, 2 former)

●NSns-1082.awsdns-07.org2026-04-21 → 2026-07-21 · 2 obs

● 2026-04-21 04:08:26
● 2026-07-21 16:38:44

●NSns-1855.awsdns-39.co.uk2026-04-21 → 2026-07-21 · 2 obs

● 2026-04-21 04:08:26
● 2026-07-21 16:38:44

●NSns-471.awsdns-58.com2026-04-21 → 2026-07-21 · 2 obs

● 2026-04-21 04:08:26
● 2026-07-21 16:38:44

●NSns-855.awsdns-42.net2026-04-21 → 2026-07-21 · 2 obs

● 2026-04-21 04:08:26
● 2026-07-21 16:38:44

●A3.33.168.2552026-04-21 → 2026-07-21 · 2 obs

● 2026-04-21 04:08:26
● 2026-07-21 16:38:44

○CNAMEcyberitas-1.hs.llnwd.net2018-06-07 → 2018-06-07 · 3 obs

● 2018-06-07 19:22:36
○ 2026-04-21 04:08:26
○ 2026-07-21 16:38:44

○CNAMEwww2.century21.com.edgekey.net2026-04-21 → 2026-07-21 · 2 obs

○ 2026-04-21 04:08:26
○ 2026-07-21 16:38:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
century21.com	ns-629.awsdns-14.net, ns-387.awsdns-48.com, ns-1874.awsdns-42.co.uk, ns-1443.awsdns-52.org	2 records
www2.century21.com	ns-1082.awsdns-07.org, ns-1855.awsdns-39.co.uk, ns-471.awsdns-58.com, ns-855.awsdns-42.net	-

✅ Authoritative Response

Server:205.251.199.63

NS records: ns-1082.awsdns-07.org, ns-1855.awsdns-39.co.uk, ns-471.awsdns-58.com, ns-855.awsdns-42.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for century21.com (unsigned zone)

⏱️ Timing

Total: 616ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`3.33.168.255`
NS	4	`ns-1082.awsdns-07.org, ns-1855.awsdns-39.co.uk...`
SOA	1	`ns-1855.awsdns-39.co.uk awsdns-hostmaste`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-387.awsdns-48.com, ns-387.awsdns-48.com)

Analysis

IP Addresses

www2.century21.com points to a single IP number: 3.33.168.255.

Additional host names — coldwellbanker.com, sothebysrealtyhomeshouston.com, bossbrokerageapp.com and two others — share IP numbers with www2.century21.com.

Name Servers

www2.century21.com has four authoritative name servers: ns-471.awsdns-58.com, ns-855.awsdns-42.net, ns-1082.awsdns-07.org and ns-1855.awsdns-39.co.uk.

www2.century21.com has at least partial name server overlap with other domains, such as sxt.org.uk, davidduchene.net, megazone.tv and two others.

ns-471.awsdns-58.com, ns-855.awsdns-42.net, ns-1082.awsdns-07.org and ns-1855.awsdns-39.co.uk all point to exactly two IP numbers each: ns-471.awsdns-58.com → 205.251.193.215 and 2600:9000:5301:d700::1; ns-855.awsdns-42.net → 205.251.195.87 and 2600:9000:5303:5700::1; ns-1082.awsdns-07.org → 205.251.196.58 and 2600:9000:5304:3a00::1; ns-1855.awsdns-39.co.uk → 205.251.199.63 and 2600:9000:5307:3f00::1.

www2.century21.com - robtex.com