guldborggrenen.dk

📜 Historical scan 2026-09-06 07:18:40 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

guldborggrenen.dk is a .dk domain served by 2 nameservers (pete.ns.cloudflare.com, riya.ns.cloudflare.com). It was registered on 29 May 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by guldborggrenen-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no 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 80ms

Nameserver	IP addresses	PTR	ASN / ISP
pete.ns.cloudflare.com	108.162.193.136 172.64.33.136 173.245.59.136 2606:4700:58::adf5:3b88 2803:f800:50::6ca2:c188 2a06:98c1:50::ac40:2188	pete.ns.cloudflare.com pete.ns.cloudflare.com pete.ns.cloudflare.com pete.ns.cloudflare.com pete.ns.cloudflare.com pete.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
riya.ns.cloudflare.com	108.162.194.155 162.159.38.155 172.64.34.155 2606:4700:50::a29f:269b 2803:f800:50::6ca2:c29b 2a06:98c1:50::ac40:229b	riya.ns.cloudflare.com riya.ns.cloudflare.com riya.ns.cloudflare.com riya.ns.cloudflare.com riya.ns.cloudflare.com riya.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#

1 records 75ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	guldborggrenen-dk.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca09::20 2a01:111:f403:ca21::8 2a01:111:f403:ca38::a 52.101.68.16 52.101.68.29 52.101.73.11 52.101.73.153	mail-db4pr02cu00406.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-matpr04cu00100.inbound.protection.outlook.com mail-wa4pr05cu00102.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 97ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 217ms

TXT Record
MS=ms67549765
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (guldborggrenen.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 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 2026-10-08 05:16:40

www	104.21.87.66 172.67.142.43 2606:4700:3031::ac43:8e2b 2606:4700:3034::6815:5742 (AS13335) (address records, no CNAME)
www vs bare domain	Only www resolves guldborggrenen.dk: no address www.guldborggrenen.dk: 104.21.87.66 172.67.142.43 2606:4700:3031::ac43:8e2b 2606:4700:3034::6815:5742 (AS13335) (all like this)
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
selector1	selector1-guldborggrenen-dk._domainkey.guldborggrenendk.onmicrosoft.com	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

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.guldborggrenen.dk	6cdCZVOWGZf5VaLD2wmhMafswV5awQz_wkFm2_UaFvI
TXT	_acme-challenge.guldborggrenen.dk	HC4X6usIvMV_btrIfh4ydKpcV67-7PWUjv5yeDLupBw

🔗 TLSA / DANE#

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

🔐 DNSSEC#

161ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2413939794
Primary NS (MNAME)	pete.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-17 16:11:52

Field	Value
Registrar	CURANET A/S
Registered	2006-05-29
Expires	2030-05-31 (1311d)

🔗 Same registrant#

2 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
iconinox.dk	CURANET A/S
lamdrupvej.dk	CURANET A/S

📋 WHOIS#

⏱️ Lookup Timing#

80ms

54ms

75ms

AAAA

62ms

TXT

217ms

CAA

55ms

HTTPS

39ms

TLSA

722ms

SOA

0ms

MTA-STS

71ms

DNSSEC

161ms

SRV

97ms

Total

1999ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 05:16:40	2470ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-18 21:02:53	1956ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-11 18:09:01	1512ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-08 16:56:20	4132ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-06 19:13:20	1454ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-06 07:18:40 shown	1999ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-29 13:09:29	1724ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-27 03:26:59	1091ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-23 23:32:18	2162ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-22 21:09:07	2483ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-20 20:46:29	18719ms	2 NS 0 A 1 MX	🔒 Secure
2026-07-27 21:50:08	1808ms	2 NS 0 A 1 MX	🔒 Secure
2026-07-21 04:36:04	1608ms	2 NS 0 A 1 MX	🔒 Secure
2026-07-04 13:26:56	2077ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-28 09:33:27	1283ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-27 03:12:19	2134ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-23 10:49:51	890ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 10:50:01	2212ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-17 10:48:45	852ms	2 NS 0 A 1 MX	🔒 Secure