sibbern.dk

Records from scan: 2026-10-08 07:43:11 · 713ms total · last checked 2026-10-21 10:56 (unchanged)

⬇ 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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 27ms

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 46ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	142.251.1.26 2a00:1450:4010:c05::1a 2a00:1450:4010:c05::1a	lb-in-f26.1e100.net li-in-x1a.1e100.net li-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1b	lcdels-in-f27.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1b	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	300s	alt3.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1a	so-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt4.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1b	tp-in-f27.1e100.net tp-in-f27.1e100.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 163ms

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#

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#

108ms

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

🏷️ SOA#

29ms

Field	Value
Serial	2416908818
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#

27ms

43ms

46ms

AAAA

34ms

TXT

163ms

CAA

56ms

HTTPS

43ms

TLSA

52ms

SOA

29ms

MTA-STS

74ms

DNSSEC

108ms

SRV

67ms

Total

713ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 07:43:11 shown	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	883ms	2 NS 0 A 5 MX	🔒 Secure