cohort.link - robtex.com

cohort.link

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:d360🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:5b47🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.91.71Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.211.96🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSderek.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b9a🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRderek.ns.cloudflare.com
A2803:f800:50::6ca2:c19a🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRderek.ns.cloudflare.com
A2a06:98c1:50::ac40:219a🇺🇸 Cloudflare2a06:98c1:50::/45
PTRderek.ns.cloudflare.com
A108.162.193.154🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRderek.ns.cloudflare.com
A172.64.33.154🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRderek.ns.cloudflare.com
A173.245.59.154🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRderek.ns.cloudflare.com
NShope.ns.cloudflare.com
A2606:4700:50::adf5:3aa3🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRhope.ns.cloudflare.com
A2803:f800:50::6ca2:c0a3🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRhope.ns.cloudflare.com
A2a06:98c1:50::ac40:20a3🇺🇸 Cloudflare2a06:98c1:50::/45
PTRhope.ns.cloudflare.com
A108.162.192.163🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRhope.ns.cloudflare.com
A172.64.32.163🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRhope.ns.cloudflare.com
A173.245.58.163🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRhope.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.91.71, 172.67.211.96
IPv6 hints2606:4700:3030::ac43:d360, 2606:4700:3037::6815:5b47
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=123, name=cloudflare-ech.com
SOAderek.ns.cloudflare.comdns@cloudflare.com serial=2410067866

link

DNSSEC🔒 Signed (DS record present)
NSns01.trs-dns.com ⭐
NSns.trs-dns.com
NSns01.trs-dns.net
NSns10.trs-dns.info
NSns10.trs-dns.org
SOAns.trs-dns.comtrs-ops@tucows.com serial=1784666166

Same first word

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cohort.agency
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cohort.network
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cohort.bm
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cohort.ai
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cohort.science
cohort.co.uk

Similar names

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chroot.name
rootch.com
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rothco.org
thorco.se
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rothco.cn
chroot.biz
chroot.space
tohrco.com

DNS History

12 records (6 active, 6 former)

NSderek.ns.cloudflare.comhope.ns.cloudflare.comA104.21.91.71172.67.211.962606:4700:3030::ac43:d3602606:4700:3037::6815:5b47188.114.96.0188.114.97.02606:4700:3031::6815:5b472606:4700:3035::ac43:d3602a06:98c1:3120::2a06:98c1:3121::
●NSderek.ns.cloudflare.com2026-05-16 → 2026-07-21 · 2 obs
● 2026-05-16 12:53:26
● 2026-07-21 20:45:38
●NShope.ns.cloudflare.com2026-05-16 → 2026-07-21 · 2 obs
● 2026-05-16 12:53:26
● 2026-07-21 20:45:38
●A104.21.91.712026-06-01 → 2026-07-21 · 8 obs
○ 2026-05-30 09:45:14
● 2026-06-01 19:20:08
● 2026-06-10 07:23:22
○ 2026-06-12 11:31:02
● 2026-06-18 02:39:36
○ 2026-06-24 03:11:18
● 2026-07-16 16:22:30
● 2026-07-21 20:45:38
●A172.67.211.962026-06-01 → 2026-07-21 · 8 obs
○ 2026-05-30 09:45:14
● 2026-06-01 19:20:08
● 2026-06-10 07:23:22
○ 2026-06-12 11:31:02
● 2026-06-18 02:39:36
○ 2026-06-24 03:11:18
● 2026-07-16 16:22:30
● 2026-07-21 20:45:38
○A188.114.96.02026-05-16 → 2026-06-24 · 9 obs
● 2026-05-16 12:53:26
● 2026-05-30 09:45:14
○ 2026-06-01 19:20:08
○ 2026-06-10 07:23:22
● 2026-06-12 11:31:02
○ 2026-06-18 02:39:36
● 2026-06-24 03:11:18
○ 2026-07-16 16:22:30
○ 2026-07-21 20:45:38
○A188.114.97.02026-05-16 → 2026-06-24 · 9 obs
● 2026-05-16 12:53:26
● 2026-05-30 09:45:14
○ 2026-06-01 19:20:08
○ 2026-06-10 07:23:22
● 2026-06-12 11:31:02
○ 2026-06-18 02:39:36
● 2026-06-24 03:11:18
○ 2026-07-16 16:22:30
○ 2026-07-21 20:45:38
●A2606:4700:3030::ac43:d3602026-07-16 → 2026-07-21 · 3 obs
○ 2026-06-24 03:11:18
● 2026-07-16 16:22:30
● 2026-07-21 20:45:38
○A2606:4700:3031::6815:5b472026-06-01 → 2026-06-18 · 7 obs
○ 2026-05-30 09:45:14
● 2026-06-01 19:20:08
● 2026-06-10 07:23:22
○ 2026-06-12 11:31:02
● 2026-06-18 02:39:36
○ 2026-06-24 03:11:18
○ 2026-07-21 20:45:38
○A2606:4700:3035::ac43:d3602026-06-01 → 2026-06-18 · 7 obs
○ 2026-05-30 09:45:14
● 2026-06-01 19:20:08
● 2026-06-10 07:23:22
○ 2026-06-12 11:31:02
● 2026-06-18 02:39:36
○ 2026-06-24 03:11:18
○ 2026-07-21 20:45:38
●A2606:4700:3037::6815:5b472026-07-16 → 2026-07-21 · 3 obs
○ 2026-06-24 03:11:18
● 2026-07-16 16:22:30
● 2026-07-21 20:45:38
○A2a06:98c1:3120::2026-05-16 → 2026-06-24 · 9 obs
● 2026-05-16 12:53:26
● 2026-05-30 09:45:14
○ 2026-06-01 19:20:08
○ 2026-06-10 07:23:22
● 2026-06-12 11:31:02
○ 2026-06-18 02:39:36
● 2026-06-24 03:11:18
○ 2026-07-16 16:22:30
○ 2026-07-21 20:45:38
○A2a06:98c1:3121::2026-05-16 → 2026-06-24 · 9 obs
● 2026-05-16 12:53:26
● 2026-05-30 09:45:14
○ 2026-06-01 19:20:08
○ 2026-06-10 07:23:22
● 2026-06-12 11:31:02
○ 2026-06-18 02:39:36
● 2026-06-24 03:11:18
○ 2026-07-16 16:22:30
○ 2026-07-21 20:45:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
linkns10.trs-dns.info, ns01.trs-dns.com, ns01.trs-dns.net, ns10.trs-dns.org-
cohort.linkhope.ns.cloudflare.com, derek.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.59.154

NS records: hope.ns.cloudflare.com, derek.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cohort.link (unsigned zone)

⏱️ Timing

Total: 696ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.211.96, 104.21.91.71
AAAA22606:4700:3037::6815:5b47, 2606:4700:3030::ac43:d360
NS2derek.ns.cloudflare.com, hope.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1derek.ns.cloudflare.com dns.cloudflare.c

Analysis

IP Addresses

cohort.link points to the four IP addresses 104.21.91.71, 172.67.211.96, 2606:4700:3030::ac43:d360 and 2606:4700:3037::6815:5b47.

www.gmailpc.com, fw.lasa.org.uk, gecmisimderdli.net and two other host names share IP numbers with cohort.link.

Name Servers

cohort.link is delegated to two name servers: derek.ns.cloudflare.com and hope.ns.cloudflare.com.

cohort.link uses the same name servers as several other domains — among them blumenpapa.at, 0928.org, safetynames.com and two more.

There is at least partial name server overlap between cohort.link and other domains — rangpurtech.com, stirlinganddistrictlions.com, bishness.com and two more among them.

These name servers are routinely deployed together with the name servers anuj.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

derek.ns.cloudflare.com resolves to 108.162.193.154, 172.64.33.154, 173.245.59.154 and 3 other IP addresses.

hope.ns.cloudflare.com resolves to 108.162.192.163, 172.64.32.163, 173.245.58.163 and 3 other IP addresses.