gulstroem.dk DNS records

🖥️ Nameservers2 records 41ms

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 43ms

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	Ringsted

📧 MX Records1 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	gulstrom-dk.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca04::7 2a01:111:f403:ca09::6 2a01:111:f403:ca09::8 52.101.73.155 52.101.73.22 52.101.73.28 52.101.73.30	mail-db4pr02cu00406.inbound.protection.outlook.com mail-db4pr02cu00307.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am7pr02cu00203.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-am7pr05cu00204.inbound.protection.outlook.com mail-am7pr05cu00306.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	gulstroem.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 162ms

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 (gulstroem.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.gulstroem.dk	gulstroem.dk

🔗 TLSA / DANE

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

🔐 DNSSEC84ms

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

🏷️ 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

41ms

A

43ms

MX

36ms

AAAA

44ms

TXT

162ms

CAA

43ms

HTTPS

61ms

TLSA

179ms

SOA

0ms

MTA-STS

73ms

DNSSEC

84ms

SRV

65ms

Total

822ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 16:45:22	822ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-11 04:19:20	1346ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-14 20:37:12	1202ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-13 03:25:14	1977ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-19 23:31:27	793ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 10:06:44	4901ms	2 NS 1 A 1 MX	🔒 Secure	View