`cityoffice100.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::6815:1050^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:a6f2^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.16.80^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.166.242^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`autumn.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2694^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`autumn.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c294^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`autumn.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2294^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`autumn.ns.cloudflare.com`
		A	108.162.194.148^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`autumn.ns.cloudflare.com`
		A	162.159.38.148^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`autumn.ns.cloudflare.com`
		A	172.64.34.148^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`autumn.ns.cloudflare.com`
NS	`felipe.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c74^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felipe.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c374^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`felipe.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2374^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`felipe.ns.cloudflare.com`
		A	108.162.195.116^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felipe.ns.cloudflare.com`
		A	162.159.44.116^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felipe.ns.cloudflare.com`
		A	172.64.35.116^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felipe.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.16.80, 172.67.166.242
		IPv6 hints	2606:4700:3035::6815:1050, 2606:4700:3035::ac43:a6f2
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=149, name=cloudflare-ech.com
SOA	`autumn.ns.cloudflare.com`dns@cloudflare.com serial=2407700236

`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=1786248154

Same first word

cityoffice100.com

DNS History

25 records (6 active, 19 former)

●NSautumn.ns.cloudflare.com2026-07-10 → 2026-08-09 · 3 obs

○ 2017-02-09 06:11:58
● 2026-07-10 13:47:32
● 2026-08-09 04:24:26

○NSdns1.iidns.com2017-02-09 → 2017-02-09 · 4 obs

○ 2016-04-29 23:55:08
● 2017-02-09 06:11:58
○ 2026-07-10 13:47:32
○ 2026-08-09 04:24:26

○NSdns2.iidns.com2017-02-09 → 2017-02-09 · 4 obs

○ 2016-04-29 23:55:08
● 2017-02-09 06:11:58
○ 2026-07-10 13:47:32
○ 2026-08-09 04:24:26

○NSdns3.iidns.com2017-02-09 → 2017-02-09 · 4 obs

○ 2016-04-29 23:55:08
● 2017-02-09 06:11:58
○ 2026-07-10 13:47:32
○ 2026-08-09 04:24:26

○NSdns4.iidns.com2017-02-09 → 2017-02-09 · 4 obs

○ 2016-04-29 23:55:08
● 2017-02-09 06:11:58
○ 2026-07-10 13:47:32
○ 2026-08-09 04:24:26

○NSdns5.iidns.com2017-02-09 → 2017-02-09 · 4 obs

○ 2016-04-29 23:55:08
● 2017-02-09 06:11:58
○ 2026-07-10 13:47:32
○ 2026-08-09 04:24:26

○NSdns6.iidns.com2017-02-09 → 2017-02-09 · 4 obs

○ 2016-04-29 23:55:08
● 2017-02-09 06:11:58
○ 2026-07-10 13:47:32
○ 2026-08-09 04:24:26

●NSfelipe.ns.cloudflare.com2026-07-10 → 2026-08-09 · 3 obs

○ 2017-02-09 06:11:58
● 2026-07-10 13:47:32
● 2026-08-09 04:24:26

○NSns1.51dns.com2015-07-11 → 2015-11-16 · 4 obs

● 2015-07-11 00:56:12
● 2015-11-16 05:34:38
○ 2016-02-08 05:35:56
○ 2026-08-09 04:24:26

○NSns1.dnsdun.com2016-02-08 → 2016-02-08 · 4 obs

○ 2015-11-16 05:34:38
● 2016-02-08 05:35:56
○ 2016-04-29 23:55:08
○ 2026-08-09 04:24:26

○NSns2.51dns.com2015-11-16 → 2015-11-16 · 4 obs

○ 2015-07-11 00:56:12
● 2015-11-16 05:34:38
○ 2016-02-08 05:35:56
○ 2026-08-09 04:24:26

○NSns3.dnsdun.net2016-02-08 → 2016-02-08 · 4 obs

○ 2015-11-16 05:34:38
● 2016-02-08 05:35:56
○ 2016-04-29 23:55:08
○ 2026-08-09 04:24:26

●A104.21.16.802026-07-26 → 2026-08-09 · 4 obs

○ 2026-07-10 13:47:32
● 2026-07-26 05:12:16
○ 2026-07-28 06:44:46
● 2026-08-09 04:24:26

○A107.148.173.532015-07-11 → 2015-07-11 · 3 obs

● 2015-07-11 00:56:12
○ 2017-02-09 06:11:58
○ 2026-08-09 04:24:26

○A108.186.81.522016-02-08 → 2016-02-08 · 4 obs

○ 2015-07-11 00:56:12
● 2016-02-08 05:35:56
○ 2016-04-29 23:55:08
○ 2026-08-09 04:24:26

●A172.67.166.2422026-07-26 → 2026-08-09 · 4 obs

○ 2026-07-10 13:47:32
● 2026-07-26 05:12:16
○ 2026-07-28 06:44:46
● 2026-08-09 04:24:26

○A188.114.96.02026-07-10 → 2026-07-28 · 5 obs

○ 2017-02-09 06:11:58
● 2026-07-10 13:47:32
○ 2026-07-26 05:12:16
● 2026-07-28 06:44:46
○ 2026-08-09 04:24:26

○A188.114.97.02026-07-10 → 2026-07-28 · 5 obs

○ 2017-02-09 06:11:58
● 2026-07-10 13:47:32
○ 2026-07-26 05:12:16
● 2026-07-28 06:44:46
○ 2026-08-09 04:24:26

●A2606:4700:3035::6815:10502026-07-26 → 2026-08-09 · 4 obs

○ 2026-07-10 13:47:32
● 2026-07-26 05:12:16
○ 2026-07-28 06:44:46
● 2026-08-09 04:24:26

●A2606:4700:3035::ac43:a6f22026-07-26 → 2026-08-09 · 4 obs

○ 2026-07-10 13:47:32
● 2026-07-26 05:12:16
○ 2026-07-28 06:44:46
● 2026-08-09 04:24:26

○A2a06:98c1:3120::2026-07-10 → 2026-07-28 · 5 obs

○ 2017-02-09 06:11:58
● 2026-07-10 13:47:32
○ 2026-07-26 05:12:16
● 2026-07-28 06:44:46
○ 2026-08-09 04:24:26

○A2a06:98c1:3121::2026-07-10 → 2026-07-28 · 5 obs

○ 2017-02-09 06:11:58
● 2026-07-10 13:47:32
○ 2026-07-26 05:12:16
● 2026-07-28 06:44:46
○ 2026-08-09 04:24:26

○A61.139.126.2412017-02-09 → 2017-02-09 · 4 obs

○ 2016-04-29 23:55:08
● 2017-02-09 06:11:58
○ 2026-07-10 13:47:32
○ 2026-08-09 04:24:26

○CNAMEjiudujiaoyu.gotoip55.com2017-02-09 → 2017-02-09 · 3 obs

● 2017-02-09 06:11:58
○ 2026-07-10 13:47:32
○ 2026-08-09 04:24:26

○CNAMEweb.w241.abc188.com2017-02-09 → 2017-02-09 · 3 obs

● 2017-02-09 06:11:58
○ 2026-07-10 13:47:32
○ 2026-08-09 04:24:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
cityoffice100.com	autumn.ns.cloudflare.com, felipe.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.148

NS records: autumn.ns.cloudflare.com, felipe.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cityoffice100.com (unsigned zone)

⏱️ Timing

Total: 144ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.166.242, 104.21.16.80`
AAAA	2	`2606:4700:3035::6815:1050, 2606:4700:3035::ac43:a6f2`
NS	2	`autumn.ns.cloudflare.com, felipe.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`autumn.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (autumn.ns.cloudflare.com, autumn.ns.cloudflare.com, autumn.ns.cloudflare.com...)

Analysis

IP Addresses

cityoffice100.com has four IP addresses: 104.21.16.80, 172.67.166.242, 2606:4700:3035::6815:1050 and 2606:4700:3035::ac43:a6f2.

Among the host names that share IP numbers with cityoffice100.com are x3213.cn, mail.audiolibrary.plus, amamasbond.com and two others.

Name Servers

cityoffice100.com has two authoritative name servers — autumn.ns.cloudflare.com and felipe.ns.cloudflare.com.

cityoffice100.com has the same name server delegation as a number of other domains, such as chuminggroup.com, dlcsdq.com, dzjxsz.com and two more.

cityoffice100.com has at least partial name server overlap with other domains, such as ph010.com, kayjewelz.com, swamivaidyalaya.com and two others.

It is common to find these name servers paired with the name servers carioca.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

autumn.ns.cloudflare.com points to 108.162.194.148, 162.159.38.148, 172.64.34.148 and 3 other IP addresses.

felipe.ns.cloudflare.com points to 108.162.195.116, 162.159.44.116, 172.64.35.116 and 3 other IP addresses.

cityoffice100.com - robtex.com