geocenter-koebenhavn.dk

📜 Historical scan 2026-10-06 06:20:31 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

geocenter-koebenhavn.dk is a .dk domain served by 2 nameservers (fatima.ns.cloudflare.com, ryan.ns.cloudflare.com). It was registered on 10 December 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.25.245 is hosted by Cloudflare, Inc. (AS13335). The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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#

2 records 40ms

Nameserver	IP addresses	PTR	ASN / ISP
fatima.ns.cloudflare.com	108.162.194.188 162.159.38.188 172.64.34.188 2606:4700:50::a29f:26bc 2803:f800:50::6ca2:c2bc 2a06:98c1:50::ac40:22bc	fatima.ns.cloudflare.com fatima.ns.cloudflare.com fatima.ns.cloudflare.com fatima.ns.cloudflare.com fatima.ns.cloudflare.com fatima.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
ryan.ns.cloudflare.com	108.162.195.229 162.159.44.229 172.64.35.229 2606:4700:58::a29f:2ce5 2803:f800:50::6ca2:c3e5 2a06:98c1:50::ac40:23e5	ryan.ns.cloudflare.com ryan.ns.cloudflare.com ryan.ns.cloudflare.com ryan.ns.cloudflare.com ryan.ns.cloudflare.com ryan.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.25.245	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.168.50	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	104.21.25.245
🔶 Autoconfig	172.67.168.50

🔷 AAAA Records (IPv6)#

2 records 35ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:19f5	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3032::ac43:a832	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 43ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.25.245,172.67.168.50 ech=AEX+DQBBwQAgACDAY7z90RqfeOIRZsM9dX9njtCecybtQ60QcnSlxFzFOgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:19f5,2606:4700:3032::ac43:a832

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 18:51:25

www	104.21.25.245 172.67.168.50 2606:4700:3030::6815:19f5 2606:4700:3032::ac43:a832 (AS13335) (address records, no CNAME)
www vs bare domain	Same network geocenter-koebenhavn.dk: 104.21.25.245 172.67.168.50 2606:4700:3030::6815:19f5 2606:4700:3032::ac43:a832 (AS13335) www.geocenter-koebenhavn.dk: 104.21.25.245 172.67.168.50 2606:4700:3030::6815:19f5 2606:4700:3032::ac43:a832 (AS13335)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.geocenter-koebenhavn.dk	SxQlSq3hT21RP3rcfXEBNXhjc_KbU1w8a467BqESeGQ
TXT	_acme-challenge.geocenter-koebenhavn.dk	b3GAT-_BU9dpVKj30juV1yvDK8vCJYlU-teNlJcoTgg

🔗 TLSA / DANE#

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

🔐 DNSSEC#

77ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

34ms

Field	Value
Serial	2416740891
Primary NS (MNAME)	fatima.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-21 19:14:50

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-12-10
Expires	2026-12-31 (66d)

🔗 Same registrant#

95 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
a76.dk	Punktum dk A/S (direct)
a76sokkel.dk	Punktum dk A/S (direct)
aquaplexus.dk	Punktum dk A/S (direct)
artikel76.dk	Punktum dk A/S (direct)
campcenturyclimate.dk	Punktum dk A/S (direct)
d-mic.dk	Punktum dk A/S (direct)
danmarks-geologiske-undersoegelse.dk	Punktum dk A/S (direct)
danmarks-geologiske-undersögelse.dk	Punktum dk A/S (direct)
danmarks-geologiske-undersøgelse.dk	Punktum dk A/S (direct)
danmarks-og-groenlands-geologiske-undersoegelse.dk	Punktum dk A/S (direct)
danmarks-og-grönlands-geologiske-undersögelse.dk	Punktum dk A/S (direct)
danmarks-og-grønlands-geologiske-undersøgelse.dk	Punktum dk A/S (direct)
danmarksgeologiskeundersoegelse.dk	Punktum dk A/S (direct)
danmarksgeologiskeundersögelse.dk	Punktum dk A/S (direct)
danmarksgeologiskeundersøgelse.dk	Punktum dk A/S (direct)
danmarksoggroenlandsgeologiskeundersoegelse.dk	Punktum dk A/S (direct)
danmarksoggrönlandsgeologiskeundersögelse.dk	Punktum dk A/S (direct)
danmarksoggrønlandsgeologiskeundersøgelse.dk	Punktum dk A/S (direct)
defa76.dk	Punktum dk A/S (direct)
denationalegeologiskeundersøgelserfordanmarkoggrønland.dk	Punktum dk A/S (direct)
dennationalehydrologiskemodel.dk	Punktum dk A/S (direct)
dia76.dk	Punktum dk A/S (direct)
dmic.dk	Punktum dk A/S (direct)
emerald.dk	Punktum dk A/S (direct)
geocenter-danmark.dk	Punktum dk A/S (direct)
geocenter-köbenhavn.dk	Punktum dk A/S (direct)
geocenter-københavn.dk	Punktum dk A/S (direct)
geocenterdanmark.dk	Punktum dk A/S (direct)
geocenterkoebenhavn.dk	Punktum dk A/S (direct)
geologi.dk	Punktum dk A/S (direct)
geological-survey.dk	Punktum dk A/S (direct)
geologicalsurvey.dk	Punktum dk A/S (direct)
geologicalsurveydenmark.dk	Punktum dk A/S (direct)
geologicalsurveygreenland.dk	Punktum dk A/S (direct)
geologicalsurveyofdenmarkandgreenland.dk	Punktum dk A/S (direct)
geologisk-undersoegelse.dk	Punktum dk A/S (direct)
geologisk-undersögelse.dk	Punktum dk A/S (direct)
geologisk-undersøgelse.dk	Punktum dk A/S (direct)
geologiske-undersögelse.dk	Punktum dk A/S (direct)
geologiske-undersøgelse.dk	Punktum dk A/S (direct)
geologiskeundersögelse.dk	Punktum dk A/S (direct)
geologiskeundersøgelse.dk	Punktum dk A/S (direct)
geologisknyt.dk	Punktum dk A/S (direct)
geologiskundersoegelse.dk	Punktum dk A/S (direct)
geologiskundersögelse.dk	Punktum dk A/S (direct)
geologiskundersøgelse.dk	Punktum dk A/S (direct)
geology.dk	Punktum dk A/S (direct)
geosites.dk	Punktum dk A/S (direct)
geoviden.dk	Punktum dk A/S (direct)
gerda.dk	Punktum dk A/S (direct)
geus.dk	Punktum dk A/S (direct)
geusbulletin.dk	Punktum dk A/S (direct)
geusjournals.dk	Punktum dk A/S (direct)
geusx.dk	Punktum dk A/S (direct)
ggu.dk	Punktum dk A/S (direct)
greenmin.dk	Punktum dk A/S (direct)
groenlands-geologiske-undersoegelse.dk	Punktum dk A/S (direct)
groenlandsgeologiskeundersoegelse.dk	Punktum dk A/S (direct)
groundwater.dk	Punktum dk A/S (direct)
groundwaterlevel.dk	Punktum dk A/S (direct)
groundwatermapping.dk	Punktum dk A/S (direct)
groundwatermaps.dk	Punktum dk A/S (direct)
grundvandskort.dk	Punktum dk A/S (direct)
grundvandsovervaagning.dk	Punktum dk A/S (direct)
grundvandsovervågning.dk	Punktum dk A/S (direct)
grundvandsstanden.dk	Punktum dk A/S (direct)
grönlands-geologiske-undersögelse.dk	Punktum dk A/S (direct)
grönlandsgeologiskeundersögelse.dk	Punktum dk A/S (direct)
grønlands-geologiske-undersøgelse.dk	Punktum dk A/S (direct)
grønlandsgeologiskeundersøgelse.dk	Punktum dk A/S (direct)
hydrologiforum.dk	Punktum dk A/S (direct)
icemon.dk	Punktum dk A/S (direct)
isskolen.dk	Punktum dk A/S (direct)
jordfugtighed.dk	Punktum dk A/S (direct)
jordskaelv.dk	Punktum dk A/S (direct)
jordskälv.dk	Punktum dk A/S (direct)
jordskælv.dk	Punktum dk A/S (direct)
kaempesten.dk	Punktum dk A/S (direct)
kontinentalsokkel.dk	Punktum dk A/S (direct)
kupa.dk	Punktum dk A/S (direct)
kæmpesten.dk	Punktum dk A/S (direct)
mem-bio.dk	Punktum dk A/S (direct)
mem2bio.dk	Punktum dk A/S (direct)
miresowa.dk	Punktum dk A/S (direct)
mosikt.dk	Punktum dk A/S (direct)
neogen.dk	Punktum dk A/S (direct)
nitrat.dk	Punktum dk A/S (direct)
promice.dk	Punktum dk A/S (direct)
seis-sustain.dk	Simply.com A/S
seismologi.dk	Punktum dk A/S (direct)
seissustain.dk	Simply.com A/S
unclos-76.dk	Punktum dk A/S (direct)
unclos76.dk	Punktum dk A/S (direct)
vandmodel.dk	Punktum dk A/S (direct)
vap.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

40ms

42ms

41ms

AAAA

35ms

TXT

202ms

CAA

49ms

HTTPS

43ms

TLSA

53ms

SOA

34ms

MTA-STS

55ms

DNSSEC

77ms

SRV

75ms

Total

446ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-21 18:51:25	1836ms	2 NS 2 A 0 MX	🔒 Secure
2026-10-07 18:33:51	457ms	2 NS 2 A 0 MX	🔒 Secure
2026-10-07 08:13:42	444ms	2 NS 2 A 0 MX	🔒 Secure
2026-10-06 06:20:31 shown	446ms	2 NS 2 A 0 MX	🔒 Secure
2026-10-01 05:59:01	522ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-26 20:18:28	665ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-24 19:54:06	714ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-17 21:07:40	923ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-07 06:55:35	876ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-26 20:43:03	1150ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-09 16:39:31	9815ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-08 14:58:57	873ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-20 04:24:14	16733ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-16 13:33:37	879ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-11 12:45:16	1926ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-23 10:15:31	2337ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-20 17:36:58	913ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-17 09:33:00	540ms	2 NS 2 A 0 MX	🔒 Secure