`cogentdynamics.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:9c9^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:bd8e^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.9.201^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.189.142^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`blair.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2679^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`blair.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c279^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`blair.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2279^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`blair.ns.cloudflare.com`
		A	108.162.194.121^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`blair.ns.cloudflare.com`
		A	162.159.38.121^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`blair.ns.cloudflare.com`
		A	172.64.34.121^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`blair.ns.cloudflare.com`
NS	`malcolm.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c51^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`malcolm.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c351^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`malcolm.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2351^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`malcolm.ns.cloudflare.com`
		A	108.162.195.81^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`malcolm.ns.cloudflare.com`
		A	162.159.44.81^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`malcolm.ns.cloudflare.com`
		A	172.64.35.81^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`malcolm.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.9.201, 172.67.189.142
		IPv6	2606:4700:3030::6815:9c9, 2606:4700:3033::ac43:bd8e
SOA	`blair.ns.cloudflare.com`dns@cloudflare.com serial=2396942866

`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=1774615147

Same first word

cogentdynamics.com

DNS History

17 records (6 active, 11 former)

●NSblair.ns.cloudflare.com2026-03-27 → 2026-03-27 · 2 obs

○ 2017-02-15 09:26:34
● 2026-03-27 12:43:50

●NSmalcolm.ns.cloudflare.com2026-03-27 → 2026-03-27 · 2 obs

○ 2017-02-15 09:26:34
● 2026-03-27 12:43:50

○NSns3.afternic.com2026-03-27 → 2026-03-27 · 1 obs

○ 2026-03-27 12:43:50

○NSns4.afternic.com2026-03-27 → 2026-03-27 · 1 obs

○ 2026-03-27 12:43:50

○NSns67.1and1.co.uk2015-08-07 → 2017-02-15 · 3 obs

● 2015-08-07 01:53:24
● 2017-02-15 09:26:34
○ 2026-03-27 12:43:50

○NSns68.1and1.co.uk2015-08-07 → 2017-02-15 · 3 obs

● 2015-08-07 01:53:24
● 2017-02-15 09:26:34
○ 2026-03-27 12:43:50

○MX.2026-03-27 → 2026-03-27 · 1 obs

○ 2026-03-27 12:43:50

○MXmx00.1and1.co.uk2015-08-07 → 2017-02-15 · 3 obs

● 2015-08-07 01:53:24
● 2017-02-15 09:26:34
○ 2026-03-27 12:43:50

○MXmx01.1and1.co.uk2015-08-07 → 2017-02-15 · 3 obs

● 2015-08-07 01:53:24
● 2017-02-15 09:26:34
○ 2026-03-27 12:43:50

●A104.21.9.2012026-03-27 → 2026-03-27 · 2 obs

○ 2017-02-15 09:26:34
● 2026-03-27 12:43:50

○A13.248.169.482026-03-27 → 2026-03-27 · 1 obs

○ 2026-03-27 12:43:50

●A172.67.189.1422026-03-27 → 2026-03-27 · 2 obs

○ 2017-02-15 09:26:34
● 2026-03-27 12:43:50

○A2001:8d8:1000:c397:293c:1990:5bb6:f0032015-08-07 → 2017-02-15 · 3 obs

● 2015-08-07 01:53:24
● 2017-02-15 09:26:34
○ 2026-03-27 12:43:50

○A217.160.69.2042015-08-07 → 2017-02-15 · 3 obs

● 2015-08-07 01:53:24
● 2017-02-15 09:26:34
○ 2026-03-27 12:43:50

●A2606:4700:3030::6815:9c92026-03-27 → 2026-03-27 · 2 obs

○ 2017-02-15 09:26:34
● 2026-03-27 12:43:50

●A2606:4700:3033::ac43:bd8e2026-03-27 → 2026-03-27 · 2 obs

○ 2017-02-15 09:26:34
● 2026-03-27 12:43:50

○A76.223.54.1462026-03-27 → 2026-03-27 · 1 obs

○ 2026-03-27 12:43:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cogentdynamics.com	blair.ns.cloudflare.com, malcolm.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.121

NS records: blair.ns.cloudflare.com, malcolm.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cogentdynamics.com (unsigned zone)

⏱️ Timing

Total: 151ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.9.201, 172.67.189.142`
AAAA	2	`2606:4700:3033::ac43:bd8e, 2606:4700:3030::6815:9c9`
NS	2	`blair.ns.cloudflare.com, malcolm.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`blair.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

cogentdynamics.com points to four IP numbers: 2606:4700:3030::6815:9c9, 2606:4700:3033::ac43:bd8e, 104.21.9.201 and 172.67.189.142.

Other host names, for instance www.oushadhi.org, addicfashion.com, www.ujorita.sbs, huf-aktiv.de and visualatelier8.com share IP numbers with cogentdynamics.com.

Name Servers

Delegation for cogentdynamics.com rests with two name servers, blair.ns.cloudflare.com and malcolm.ns.cloudflare.com.

cogentdynamics.com shares the same name server setup with other domains, such as vycherpno.ck.ua and bakercitycycling.org.

cogentdynamics.com at least partially shares name servers with other domains, for instance agkdy.online, ldbvv.com, xiang-t.com, betting-ng.com and domain1.top.

Host names with six IP numbers: blair.ns.cloudflare.com points to: 2606:4700:50::a29f:2679, 2803:f800:50::6ca2:c279, 2a06:98c1:50::ac40:2279, 108.162.194.121, 162.159.38.121 and 172.64.34.121. malcolm.ns.cloudflare.com points to: 2606:4700:58::a29f:2c51, 2803:f800:50::6ca2:c351, 2a06:98c1:50::ac40:2351, 108.162.195.81, 162.159.44.81 and 172.64.35.81.

cogentdynamics.com - robtex.com