netbyggeren.dk DNS records

🖥️ Nameservers2 records 52ms

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 60ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
159.253.90.12	43200s	—	AS42903	Itm8 A/S	159.253.88.0/21	🇩🇰 Denmark	Frederiksværk

📧 MX Records2 records 56ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	netbyggeren-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::a 2a01:111:f403:ca09::3 2a01:111:f403:ca09::7 52.101.68.18 52.101.68.39 52.101.73.11 52.101.73.28	mail-db4pr02cu00204.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am7pr05cu00204.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
20	1800s	mail.challenge-it.dk	—	—	—

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.56
🔶 Autoconfig	netbyggeren.dk → 159.253.90.12

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 168ms

TXT Record
MS=ms42962403
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (netbyggeren.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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.netbyggeren.dk	netbyggeren.dk

🔗 TLSA / DANE

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

🔐 DNSSEC81ms

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

🏷️ SOA0ms

Field	Value
Serial	2026080901
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

52ms

A

60ms

MX

56ms

AAAA

36ms

TXT

168ms

CAA

55ms

HTTPS

48ms

TLSA

1014ms

SOA

0ms

MTA-STS

60ms

DNSSEC

81ms

SRV

88ms

Total

2342ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-09 13:45:15	2342ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-07 17:38:07	9116ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-13 06:30:58	1541ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-30 07:16:37	1167ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-28 13:45:48	1481ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-26 02:57:09	907ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-17 23:18:56	1286ms	2 NS 1 A 2 MX	🔒 Secure	View