sibbern.dk

📜 Historical scan 2026-06-18 04:41:56 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sibbern.dk is a .dk domain served by 2 nameservers (celeste.ns.cloudflare.com, tadeo.ns.cloudflare.com). It was registered on 12 February 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. 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#

2 records 41ms

Nameserver	IP addresses	PTR	ASN / ISP
celeste.ns.cloudflare.com	108.162.194.7 162.159.38.7 172.64.34.7 2606:4700:50::a29f:2607 2803:f800:50::6ca2:c207 2a06:98c1:50::ac40:2207	celeste.ns.cloudflare.com celeste.ns.cloudflare.com celeste.ns.cloudflare.com celeste.ns.cloudflare.com celeste.ns.cloudflare.com celeste.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
tadeo.ns.cloudflare.com	108.162.195.197 162.159.44.197 172.64.35.197 2606:4700:58::a29f:2cc5 2803:f800:50::6ca2:c3c5 2a06:98c1:50::ac40:23c5	tadeo.ns.cloudflare.com tadeo.ns.cloudflare.com tadeo.ns.cloudflare.com tadeo.ns.cloudflare.com tadeo.ns.cloudflare.com tadeo.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

🌍

No A records found

📧 MX Records#

5 records 65ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	—	aspmx.l.google.com	2a00:1450:4010:c03::1b 2a00:1450:4010:c03::1b 74.125.131.27	lr-in-f27.1e100.net lr-in-x1b.1e100.net lu-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	—	alt1.aspmx.l.google.com	172.253.152.27 2404:6800:4003:c26::1a	yulpptr-in-f27.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	—	alt2.aspmx.l.google.com	192.178.211.27 2404:6800:4003:c26::1b	lcbomp-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	—	alt3.aspmx.l.google.com	192.178.230.27 2404:6800:4008:c01::1b	yunrtab-in-f27.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	—	alt4.aspmx.l.google.com	173.194.43.26 2607:f8b0:400e:c1e::1a	yudlsqd-in-f26.1e100.net yudlsqd-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 216ms

TXT Record
google-site-verification=gobVnpoKlVmSdHOQprBUoLOxGYLRHDE5CBKJlN2CiKc
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (sibbern.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.sibbern.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:02b4a2952bbb4ae3b30010e2dfe72411@dmarc-reports.cloudflare.net,mailto:67bc49ce05f03@ag.dmarcly.com; ruf=mailto:67bc49ce05f03@fo.dmarcly.com; sp=none;

📬 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 2026-10-08 07:43:11

www	Exists, no address
www vs bare domain	Neither resolves sibbern.dk: no address www.sibbern.dk: no address
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
google	—	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: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

74ms

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

🏷️ SOA#

97ms

Field	Value
Serial	2406741788
Primary NS (MNAME)	celeste.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-05 03:15:17

Field	Value
Registrar	A/S SCANNET
Registered	1997-02-12
Expires	2027-03-31 (159d)

📋 WHOIS#

⏱️ Lookup Timing#

41ms

37ms

65ms

AAAA

37ms

TXT

216ms

CAA

35ms

HTTPS

35ms

TLSA

77ms

SOA

97ms

MTA-STS

51ms

DNSSEC

74ms

SRV

71ms

Total

883ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 07:43:11	713ms	2 NS 0 A 5 MX	🔒 Secure
2026-10-05 03:05:47	3126ms	2 NS 0 A 5 MX	🔒 Secure
2026-09-25 01:06:50	1439ms	2 NS 0 A 5 MX	🔒 Secure
2026-09-12 01:21:45	1143ms	2 NS 0 A 5 MX	🔒 Secure
2026-09-05 00:32:07	1379ms	2 NS 0 A 5 MX	🔒 Secure
2026-08-26 19:11:00	2534ms	2 NS 0 A 5 MX	🔒 Secure
2026-08-17 21:39:19	9923ms	2 NS 0 A 5 MX	🔒 Secure
2026-08-10 17:28:55	25204ms	2 NS 0 A 5 MX	🔒 Secure
2026-07-25 09:22:29	17186ms	2 NS 0 A 5 MX	🔒 Secure
2026-07-02 16:01:32	10540ms	2 NS 0 A 5 MX	🔒 Secure
2026-06-27 11:08:04	2849ms	2 NS 0 A 5 MX	🔒 Secure
2026-06-18 04:41:56 shown	883ms	2 NS 0 A 5 MX	🔒 Secure