cohan.dev - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`cohan.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:8625^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:60c^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.6.12^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.134.37^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`erin.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a71^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c071^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`erin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2071^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`erin.ns.cloudflare.com`
		A	108.162.192.113^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
		A	172.64.32.113^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
		A	173.245.58.113^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
NS	`woz.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b96^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c196^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`woz.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2196^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`woz.ns.cloudflare.com`
		A	108.162.193.150^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
		A	172.64.33.150^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
		A	173.245.59.150^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
MX	`in1-smtp.messagingengine.com` ⭐
		A	103.168.172.216^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-01.messagingengine.com`
		A	103.168.172.217^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-02.messagingengine.com`
		A	103.168.172.218^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-03.messagingengine.com`
		A	103.168.172.219^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-04.messagingengine.com`
		A	103.168.172.220^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-05.messagingengine.com`
		A	103.168.172.221^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-06.messagingengine.com`
		A	103.168.172.222^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-07.messagingengine.com`
		A	103.168.172.223^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-08.messagingengine.com`
MX	`in2-smtp.messagingengine.com` ⭐
		A	202.12.124.216^{TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-01.messagingengine.com`
		A	202.12.124.217^{TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-02.messagingengine.com`
		A	202.12.124.218^{TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-03.messagingengine.com`
		A	202.12.124.219^{TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-04.messagingengine.com`
TXT	`ca3-41a905d3cc174931b3fb4cff2f01399e`
TXT	`v=spf1 include:spf.cohanrobinson.com -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.6.12, 172.67.134.37
		IPv6 hints	2606:4700:3030::ac43:8625, 2606:4700:3036::6815:60c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=237, name=cloudflare-ech.com
SOA	`erin.ns.cloudflare.com`dns@cloudflare.com serial=2410632421

`dev`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=1

🔒 HSTS Preload (+subdomains)

Subdomains

apps.cohan.dev

swarm.cohan.dev

Same first word

cohan.ie

cohan.com.au

cohan.com

cohan.nl

cohan.dev

cohan.net

cohan.fr

cohan.org

cohan.com.ar

cohan.io

cohan.org.co

cohan.ir

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DNS History

16 records (8 active, 8 former)

●NSerin.ns.cloudflare.com2020-02-24 → 2026-08-16 · 2 obs

● 2020-02-24 08:34:08
● 2026-08-16 04:42:56

●NSwoz.ns.cloudflare.com2020-02-24 → 2026-08-16 · 2 obs

● 2020-02-24 08:34:08
● 2026-08-16 04:42:56

●MXin1-smtp.messagingengine.com2020-02-24 → 2026-08-16 · 2 obs

● 2020-02-24 08:34:08
● 2026-08-16 04:42:56

●MXin2-smtp.messagingengine.com2020-02-24 → 2026-08-16 · 2 obs

● 2020-02-24 08:34:08
● 2026-08-16 04:42:56

●A104.21.6.122026-02-24 → 2026-08-16 · 11 obs

○ 2020-02-24 08:34:08
● 2026-02-24 16:57:44
● 2026-03-02 09:52:30
○ 2026-03-17 12:43:58
● 2026-03-21 15:32:50
● 2026-04-17 16:26:06
○ 2026-04-29 03:59:50
● 2026-05-29 13:03:08
○ 2026-08-10 21:25:28
● 2026-08-15 21:59:38
● 2026-08-16 04:42:56

○A142.93.108.1232020-02-24 → 2020-02-24 · 3 obs

● 2020-02-24 08:34:08
○ 2026-02-24 16:57:44
○ 2026-08-16 04:42:56

●A172.67.134.372026-02-24 → 2026-08-16 · 11 obs

○A188.114.96.02026-03-17 → 2026-08-10 · 9 obs

○ 2026-03-02 09:52:30
● 2026-03-17 12:43:58
○ 2026-03-21 15:32:50
○ 2026-04-17 16:26:06
● 2026-04-29 03:59:50
○ 2026-05-29 13:03:08
● 2026-08-10 21:25:28
○ 2026-08-15 21:59:38
○ 2026-08-16 04:42:56

○A188.114.97.02026-03-17 → 2026-08-10 · 9 obs

●A2606:4700:3030::ac43:86252026-06-30 → 2026-08-16 · 5 obs

○ 2026-05-29 13:03:08
● 2026-06-30 22:12:38
○ 2026-08-10 21:25:28
● 2026-08-15 21:59:38
● 2026-08-16 04:42:56

○A2606:4700:3034::ac43:86252026-02-24 → 2026-05-29 · 10 obs

●A2606:4700:3036::6815:60c2026-06-30 → 2026-08-16 · 5 obs

○ 2026-05-29 13:03:08
● 2026-06-30 22:12:38
○ 2026-08-10 21:25:28
● 2026-08-15 21:59:38
● 2026-08-16 04:42:56

○A2606:4700:3037::6815:60c2026-02-24 → 2026-05-29 · 10 obs

○A2a03:b0c0:3:e0::26f:c0012020-02-24 → 2020-02-24 · 3 obs

● 2020-02-24 08:34:08
○ 2026-02-24 16:57:44
○ 2026-08-16 04:42:56

○A2a06:98c1:3120::2026-03-17 → 2026-08-10 · 9 obs

○A2a06:98c1:3121::2026-03-17 → 2026-08-10 · 9 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
cohan.dev	erin.ns.cloudflare.com, woz.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.113

NS records: erin.ns.cloudflare.com, woz.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cohan.dev (unsigned zone)

⏱️ Timing

Total: 1938ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.6.12, 172.67.134.37`
AAAA	2	`2606:4700:3036::6815:60c, 2606:4700:3030::ac43:8625`
NS	2	`erin.ns.cloudflare.com, woz.ns.cloudflare.com`
MX	2	`in1-smtp.messagingengine.com (pri: 10), in2-smtp.messagingengine.com (pri: 10)`
TXT	2	`ca3-41a905d3cc174931b3fb4cff2f01399e, v=spf1 include:spf.cohanrobinson.com -al`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`erin.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

apps.cohan.dev and swarm.cohan.dev each fall under cohan.dev as their parent domain.

IP Addresses

cohan.dev points to the four IP addresses 104.21.6.12, 172.67.134.37, 2606:4700:3030::ac43:8625 and 2606:4700:3036::6815:60c.

Two other host names, along with onga.io, asia.wieprz.opendi.pl and bomslot.net, also share IP numbers with cohan.dev.

Name Servers

The NS records for cohan.dev delegate to erin.ns.cloudflare.com and woz.ns.cloudflare.com.

cohan.dev shares its NS records with other domains, for example webalchemy.it, hdsserver.net, lixus.id and two others.

There is at least partial name server overlap between cohan.dev and other domains — bdll844299.pro, zjazd.org, fardasl.org and two more among them.

The name servers ivan.ns.cloudflare.com, jasmine.ns.cloudflare.com and jack.ns.cloudflare.com are often found in combination with these name servers.

DNS names with 6 IP addresses:

erin.ns.cloudflare.com maps to 108.162.192.113, 172.64.32.113, 173.245.58.113 and 3 additional IP addresses.

woz.ns.cloudflare.com maps to 108.162.193.150, 172.64.33.150, 173.245.59.150 and 3 additional IP addresses.

Mail Servers

cohan.dev is served by two mail servers, in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

Among the domains sharing a mail server setup with cohan.dev are gage.nyc, wbadc.org, httpguides.com and two others.

cohan.dev and other domains — cal.io for instance — share at least some mail servers.

DNS names with 8 IP addresses:

in1-smtp.messagingengine.com maps to 103.168.172.216, 103.168.172.217, 103.168.172.218 and 5 additional IP addresses.

Host names that resolve to four IP numbers:

in2-smtp.messagingengine.com resolves to four IP addresses — 202.12.124.216, 202.12.124.217, 202.12.124.218 and 202.12.124.219.