hydrogen.dk

📜 Historical scan 2026-06-30 15:17:49 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

hydrogen.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 25 October 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. The zone is DNSSEC-signed and validates, 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 33ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

🌍

No A records found

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 144ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (hydrogen.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.hydrogen.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:634930baaf235@dmarc.centerasecurity.com;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-21 00:01:16

www	Exists, no address
www vs bare domain	Neither resolves hydrogen.dk: no address www.hydrogen.dk: no address
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

51ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

37ms

Field	Value
Serial	2025061800
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-21 23:09:50

Field	Value
Registrar	Simply.com A/S
Registered	1999-10-25
Expires	2026-12-31 (68d)

🔗 Same registrant#

9 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).

Domain	Registrar
cn-fond.dk	Simply.com A/S
cnstrandmollen.dk	Simply.com A/S
foedsler.dk	Simply.com A/S
fødsel.dk	Simply.com A/S
hjemmefødsel.dk	Simply.com A/S
labline.dk	Simply.com A/S
proal.dk	Simply.com A/S
strandmollen.dk	Simply.com A/S
tech-line.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

33ms

39ms

33ms

AAAA

31ms

TXT

144ms

CAA

38ms

HTTPS

34ms

TLSA

29ms

SOA

37ms

MTA-STS

40ms

DNSSEC

51ms

SRV

44ms

Total

471ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-21 00:01:16	409ms	3 NS 0 A 0 MX	🔒 Secure
2026-10-03 11:59:55	426ms	3 NS 0 A 0 MX	🔒 Secure
2026-09-30 11:52:36	369ms	3 NS 0 A 0 MX	🔒 Secure
2026-09-23 23:08:55	360ms	3 NS 0 A 0 MX	🔒 Secure
2026-08-26 17:57:22	584ms	3 NS 0 A 0 MX	🔒 Secure
2026-06-30 15:17:49 shown	471ms	3 NS 0 A 0 MX	🔒 Secure
2026-06-17 15:25:05	429ms	3 NS 0 A 0 MX	🔒 Secure