cohero.dk

📜 Historical scan 2026-09-11 20:45:54  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cohero.dk is a .dk domain served by 3 nameservers (helium.ns.hetzner.de, hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com). It was registered on 3 January 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 216.198.79.1 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by mail.cohero.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

3 records   122ms
NameserverIP addressesPTRASN / ISP
helium.ns.hetzner.de 193.47.99.5
2001:67c:192c::add:5		 helium.ns.hetzner.de
helium.ns.hetzner.de		 AS12337 noris network AG
AS12337 noris network AG
hydrogen.ns.hetzner.com 213.133.100.98
2a01:4f8:0:1::add:1098		 hydrogen.ns.hetzner.com
hydrogen.ns.hetzner.com		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
oxygen.ns.hetzner.com 2a01:4f8:0:1::add:2992
88.198.229.192		 oxygen.ns.hetzner.com
oxygen.ns.hetzner.com		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH

🌍 A Records#

1 records   169ms
IPTTLPTRASNISP / OrgCIDRCountryCity
216.198.79.1 3600s — AS16509 Amazon.com, Inc. 216.198.79.0/24 🇺🇸 United States —

📧 MX Records#

1 records   198ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mail.cohero.dk 167.235.245.100
2a01:4f8:c010:a48e::1		 mail.cohero.dk
mail.cohero.dk		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscovermail.cohero.dk → 167.235.245.100
🔶 Autoconfigmail.cohero.dk → 167.235.245.100

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records   733ms
TXT Record
P-z3Yhre5ZE6
v=spf1 mx a:mail.cohero.dk ~all

✉️ SPF#

PolicyRecord (cohero.dk)
~all (soft fail) v=spf1 mx a:mail.cohero.dk ~all

📨 DMARC#

PolicyRecord (_dmarc.cohero.dk)
p=none (monitor only) v=DMARC1; p=none; sp=none;

📬 MTA-STS#

274ms
CheckResult
Status⚠️ Invalid
TXT record (_mta-sts)✓ Found
HTTPS policy✗ Missing / invalid
Policy ID2026082501
Policy MX—

📈 TLSRPT#

StatusReport address (rua)
✓ Enabled mailto:postmaster@cohero.dk

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-22 03:32:38
www2.31.72.85 2a01:4f8:c016:c50f::1 (AS24940) (address records, no CNAME)
www vs bare domainSame network
WildcardNo

✍️ DKIM keys#

1 found
SelectorCNAMEKey
dkim — RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

408ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2026090502
Primary NS (MNAME)ns1.simply.com
Responsible (RNAME)hostmaster@simply.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s

📋 Registration#

WHOIS fetched 2026-10-21 02:40:09
FieldValue
RegistrarSimply.com A/S
Registered2026-01-03
Expires2027-01-02 (68d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet
📋 WHOIS#

⏱️ Lookup Timing#

NS
122ms
A
169ms
MX
198ms
AAAA
134ms
TXT
733ms
CAA
140ms
HTTPS
141ms
TLSA
128ms
SOA
0ms
MTA-STS
274ms
DNSSEC
408ms
SRV
417ms
Total
4349ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-22 03:32:38 793ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-21 02:27:54 862ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-15 22:01:58 1052ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-10 18:57:32 845ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-05 16:05:21 2170ms 3 NS 1 A 1 MX 🔓 Insecure
2026-09-18 22:09:11 1846ms 3 NS 1 A 1 MX 🔓 Insecure
2026-09-11 20:45:54 shown 4349ms 3 NS 1 A 1 MX 🔓 Insecure
2026-09-04 19:06:37 1089ms 3 NS 1 A 1 MX 🔓 Insecure
2026-08-30 17:52:32 2034ms 3 NS 1 A 1 MX 🔓 Insecure
2026-08-29 12:49:32 722ms 3 NS 1 A 1 MX 🔓 Insecure
2026-08-28 11:09:07 606ms 3 NS 1 A 1 MX 🔓 Insecure
2026-08-27 10:56:37 1138ms 3 NS 1 A 1 MX 🔓 Insecure
2026-08-26 20:18:46 1207ms 3 NS 1 A 1 MX 🔓 Insecure
2026-08-22 22:27:38 5460ms 3 NS 1 A 1 MX 🔓 Insecure
2026-08-20 22:09:19 5072ms 3 NS 1 A 1 MX 🔓 Insecure
2026-08-10 16:29:18 2544ms 3 NS 1 A 1 MX 🔓 Insecure
2026-07-17 04:34:14 8922ms 3 NS 1 A 1 MX 🔓 Insecure
2026-06-28 12:56:49 1787ms 3 NS 1 A 1 MX 🔓 Insecure
2026-06-24 20:07:06 456ms 3 NS 1 A 1 MX 🔓 Insecure
2026-06-24 02:01:18 1179ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-16 21:47:24 426ms 3 NS 1 A 1 MX 🔓 Insecure
2026-06-16 21:41:24 595ms 3 NS 1 A 1 MX 🔓 Insecure
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