guldfeldt.dk

Records from scan: 2026-10-03 09:36:02 · 763ms total · last checked 2026-10-17 05:26 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

guldfeldt.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 18 March 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.12 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by guldfeldt-dk.mx1-dk.mailanyone.net, guldfeldt-dk.mx2-dk.mailanyone.net and 1 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 53ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.12	600s	prolinux100.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

3 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	guldfeldt-dk.mx1-dk.mailanyone.net	192.162.219.155 2a01:77c0:1619:4100:6fa6:1315:2bd2:51cd	mx41.electric.net mx11.electric.net	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
20	3600s	guldfeldt-dk.mx2-dk.mailanyone.net	192.162.219.155 2001:978:2a01:0:192:162:217:4	mx41.electric.net —	AS16509 Amazon.com, Inc. AS174 Cogent Communications, LLC
30	3600s	guldfeldt-dk.mx3-dk.mailanyone.net	192.162.219.255	mx41.electric.net	AS16509 Amazon.com, Inc.

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.24
🔶 Autoconfig	185.21.40.12

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

5 records 251ms

TXT Record
_cthzxm9g6m1oi79wfk01isnuqxhcpf5
2UxtS75pMHlqwLZjAzMflSZUbqOiXKfejKeZ481cQ/taR9gKvrr4dl6Y69p+UFNSCB1hNz7fZb958Oa8I2By0Q==
53l71l6w72bv3785lsnfcfr05bsdr5fv
MS=ms66543641
v=spf1 include:spf.protection.outlook.com include:spf.mailanyone.net include:docs.itagil.dk include:spf.curanet.dk mx a:mail.hjsas.dk -all

✉️ SPF#

Policy	Record (guldfeldt.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.mailanyone.net include:docs.itagil.dk include:spf.curanet.dk mx a:mail.hjsas.dk -all

📨 DMARC#

Policy	Record (_dmarc.guldfeldt.dk)
p=reject	v=DMARC1; p=reject; pct=100;

📬 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 2026-10-12 23:59:25

www	185.21.40.12 (AS48854) (address records, no CNAME)
www vs bare domain	Same network guldfeldt.dk: 185.21.40.12 (AS48854) www.guldfeldt.dk: 185.21.40.12 (AS48854)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 10/10 · policy: -all

warn 10 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#

102ms

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

🏷️ SOA#

45ms

Field	Value
Serial	2026100201
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-03 10:20:09

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1999-03-18
Expires	2027-03-31 (165d)

📋 WHOIS#

⏱️ Lookup Timing#

53ms

42ms

49ms

AAAA

55ms

TXT

251ms

CAA

48ms

HTTPS

55ms

TLSA

149ms

SOA

45ms

MTA-STS

77ms

DNSSEC

102ms

SRV

110ms

Total

763ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 09:36:02 shown	763ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-01 10:26:47	1924ms	2 NS 1 A 3 MX	🔒 Secure
2026-08-31 04:21:52	1819ms	2 NS 1 A 3 MX	🔒 Secure
2026-08-27 09:58:09	2741ms	2 NS 1 A 3 MX	🔒 Secure
2026-08-01 21:35:59	3444ms	2 NS 1 A 3 MX	🔒 Secure
2026-07-01 09:15:25	1715ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-21 00:39:32	2539ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-20 05:32:32	2632ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-17 10:10:33	2735ms	2 NS 1 A 3 MX	🔒 Secure