brevduen.dk DNS records

🖥️ Nameservers2 records 62ms

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 64ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
167.235.55.231	600s	static.231.55.235.167.clients.your-server.de	AS24940	Hetzner Online GmbH	167.235.0.0/16	🇩🇪 Germany	Nuremberg

📧 MX Records3 records 33ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
5	3600s	brevduen-dk.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca04::5 2a01:111:f403:ca09::1 2a01:111:f403:ca09::a 52.101.68.36 52.101.73.11 52.101.73.145 52.101.73.30	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db3pr0202cu00205.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am6pr02cu00301.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
100	43200s	cluster5.eu.messagelabs.com	195.245.230.200 195.245.230.201 195.245.230.202 195.245.231.69 195.245.231.72 195.245.231.75 85.158.142.214 85.158.142.215	mail858.messagelabs.com mail859.messagelabs.com mail860.messagelabs.com mail874.messagelabs.com mail876.messagelabs.com mail879.messagelabs.com mail838.messagelabs.com mail839.messagelabs.com	AS396982 Google LLC AS396982 Google LLC AS396982 Google LLC AS396982 Google LLC AS396982 Google LLC AS396982 Google LLC AS396982 Google LLC AS396982 Google LLC
200	43200s	cluster5a.eu.messagelabs.com	34.91.159.228	228.159.91.34.bc.googleusercontent.com	AS396982 Google LLC

📧 Autodiscover / Autoconfig

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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 78ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records2 records 168ms

TXT Record
MS=ms49002938
v=spf1 ip4:167.235.55.231 include:spf.protection.outlook.com ~all

✉️ SPF

Policy	Record (brevduen.dk)
~all (soft fail)	v=spf1 ip4:167.235.55.231 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

🔗 TLSA / DANE

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

🔐 DNSSEC2076ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081301
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

62ms

A

64ms

MX

33ms

AAAA

57ms

TXT

168ms

CAA

44ms

HTTPS

48ms

TLSA

1209ms

SOA

0ms

MTA-STS

82ms

DNSSEC

2076ms

SRV

78ms

Total

3894ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 13:46:14	3894ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-08-13 16:37:34	10450ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-07-16 21:04:06	2458ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-25 01:56:23	1707ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-16 16:51:04	1038ms	2 NS 1 A 3 MX	🔒 Secure	View