guldborg-tm.dk

📜 Historical scan 2026-06-27 05:05:46 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

guldborg-tm.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 15 September 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.87 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by guldborgtm-dk02b.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 28ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 28ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.87	3600s	vm1447.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	guldborgtm-dk02b.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::f 2a01:111:f403:ca09::3 2a01:111:f403:ca09::e 52.101.68.10 52.101.68.36 52.101.73.16 52.101.73.2	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-as9pr07cu00302.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 → 40.104.116.56
🔶 Autoconfig	185.21.40.87

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 139ms

TXT Record
MS=ms41542305
v=spf1 include:spf.onlinemail.io include:spf.stom.dk include:web.shared.mysmtp.com include:spf.protection.outlook.com ~all

✉️ SPF#

Policy	Record (guldborg-tm.dk)
~all (soft fail)	v=spf1 include:spf.onlinemail.io include:spf.stom.dk include:web.shared.mysmtp.com 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 2026-10-09 09:29:56

www	185.21.40.87 (AS48854) (address records, no CNAME)
www vs bare domain	Same network guldborg-tm.dk: 185.21.40.87 (AS48854) www.guldborg-tm.dk: 185.21.40.87 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

4 found

Selector	CNAME	Key
s1	s1.domainkey.u3194101.wl102.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u3194101.wl102.sendgrid.net	RSA · ~1024 bit below 2048 bit
selector1	selector1-guldborgtm-dk02b._domainkey.guldborgtm.q-v1.dkim.mail.microsoft	RSA · ~2048 bit
selector2	selector2-guldborgtm-dk02b._domainkey.guldborgtm.q-v1.dkim.mail.microsoft	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: 9/10 · policy: ~all

warn 9 of the 10 allowed DNS lookups used: one more include can break SPF

🔗 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	fully validated

🏷️ SOA#

45ms

Field	Value
Serial	2025062501
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-06 04:31:17

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2020-09-15
Expires	2027-09-30 (347d)

📋 WHOIS#

⏱️ Lookup Timing#

28ms

31ms

AAAA

46ms

TXT

139ms

CAA

45ms

HTTPS

33ms

TLSA

243ms

SOA

45ms

MTA-STS

39ms

DNSSEC

51ms

SRV

50ms

Total

793ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 09:29:56	2216ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-06 04:04:12	1193ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-05 04:02:56	236ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-04 03:53:23	114ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-03 03:51:57	243ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-02 03:48:49	779ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-01 03:38:22	1141ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-27 05:05:46 shown	793ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-26 07:00:07	1792ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 22:52:55	2221ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 16:35:45	776ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-21 04:09:59	1153ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 10:09:27	2577ms	2 NS 1 A 1 MX	🔒 Secure