1431.dk DNS records

🖥️ Nameservers4 records 75ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records1 records 48ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
52.236.60.130	3600s	—	AS8075	Microsoft Corporation	52.224.0.0/11	🇮🇪 Ireland	Dublin

📧 MX Records1 records 73ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	1431-dk.b-v1.mx.microsoft	2a01:111:f403:ca04::c 2a01:111:f403:ca09::26 2a01:111:f403:ca09::5 2a01:111:f403:ca48::c 52.101.68.3 52.101.73.126 52.101.73.145 52.101.73.30	mail-db9pr02cu00204.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-am8pr83cu00106.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

📧 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 79ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records2 records 184ms

TXT Record
MS=ms31784257
v=spf1 include:spf.protection.outlook.com include:spf.diaphoni.net ip4:188.176.102.154 -all

✉️ SPF

Policy	Record (1431.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.diaphoni.net ip4:188.176.102.154 -all

📨 DMARC

Policy	Record (_dmarc.1431.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:dmarc@1431.dk;

📬 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 / DANE4 records 71ms

Service / Owner	Type	Cert association
SMTP _25._tcp.1431-dk.b-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	54883CC5F1849331E6BF5002C3129D20…
SMTP _25._tcp.1431-dk.b-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	803F7447CC75B208DBCA042346F5D8DF…
SMTP _25._tcp.1431-dk.b-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	C1AD7778796D20BCA65C889A26550211…
SMTP _25._tcp.1431-dk.b-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	EA7A25255D111FC3CE4CB8FABE3ADF9C…

🔐 DNSSEC101ms

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

🏷️ SOA0ms

Field	Value
Serial	2025043001
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

75ms

A

48ms

MX

73ms

AAAA

63ms

TXT

184ms

CAA

73ms

HTTPS

56ms

TLSA

71ms

SOA

0ms

MTA-STS

90ms

DNSSEC

101ms

SRV

79ms

Total

858ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 09:37:42	858ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-28 16:05:39	1677ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-19 20:08:27	938ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 12:54:35	2476ms	4 NS 1 A 1 MX	🔒 Secure	View