gulstrøm.dk DNS records

🖥️ Nameservers2 records 280ms

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 Records1 records 272ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
5.103.39.198	3600s	5.103.39.198.static.fibianet.dk	AS44869	FIBIA P/S	5.103.0.0/16	🇩🇰 Denmark	Holbæk

📧 MX Records1 records 249ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	gulstrom-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca09::5 2a01:111:f403:ca09::6 2a01:111:f403:ca09::b 52.101.68.3 52.101.68.39 52.101.73.15 52.101.73.26	mail-db7pr03cu00401.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as9pr05cu01302.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
🔶 Autoconfig	xn--gulstrm-v1a.dk → 5.103.39.198

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records5 records 560ms

TXT Record
google-site-verification=csnoWC2GqNNhHSsetRvfcbe2-iMWdtD1oSC8D0NP1gY
google-site-verification=GotEhDcS9PD9jLP74JsihQc0EkbgN8qrmLskIPfzRBc
google-site-verification=IHcSqLB6iRbiLsKuTtqfxoH0DT0ux0W5us2aHy7GpJE
MS=ms61495145
v=spf1 mx ip4:5.103.39.212 include:spf.protection.outlook.com a:mail.nrgi.dk include:trustpilotservice.com include:spf.mandrillapp.com include:rnmk.com ~all

✉️ SPF

Policy	Record (gulstrøm.dk)
~all (soft fail)	v=spf1 mx ip4:5.103.39.212 include:spf.protection.outlook.com a:mail.nrgi.dk include:trustpilotservice.com include:spf.mandrillapp.com include:rnmk.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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.gulstrøm.dk	xn--gulstrm-v1a.dk

🔗 TLSA / DANE

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

🔐 DNSSEC375ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	ncache nxdomain overridden by dig AD

🏷️ SOA0ms

Field	Value
Serial	2026081001
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

280ms

A

272ms

MX

249ms

AAAA

183ms

TXT

560ms

CAA

181ms

HTTPS

272ms

TLSA

501ms

SOA

0ms

MTA-STS

328ms

DNSSEC

375ms

SRV

299ms

Total

6190ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-11 16:16:48	6190ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-15 16:45:49	10028ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-13 14:36:14	6222ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-12 08:25:15	1280ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-29 10:11:10	779ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 12:40:21	2131ms	2 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-25 00:18:59	611ms	2 NS 1 A 0 MX	⚠️ Bogus	View
2026-06-24 22:50:24	2184ms	2 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-20 03:37:07	1037ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 10:48:39	1598ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 10:41:27	987ms	2 NS 1 A 1 MX	🔒 Secure	View