guardrails.dk DNS records

🖥️ Nameservers4 records 38ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1-07.azure-dns.com	13.107.236.7 2603:1061:0:700::7	ns1-07.azure-dns.com ns1-07.azure-dns.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns2-07.azure-dns.net	150.171.21.7 2620:1ec:8ec:700::7	ns2-07.azure-dns.net ns2-07.azure-dns.net	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns3-07.azure-dns.org	204.14.183.7 2a01:111:4000:700::7	ns3-07.azure-dns.org ns3-07.azure-dns.org	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns4-07.azure-dns.info	208.84.5.7 2620:1ec:bda:700::7	ns4-07.azure-dns.info ns4-07.azure-dns.info	AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🌍 A Records1 records 47ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
132.220.38.112	300s	—	AS8075	Microsoft Corporation	132.220.0.0/16	🇳🇱 The Netherlands	Amsterdam

📧 MX Records1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	guardrails-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::6 2a01:111:f403:ca04::7 2a01:111:f403:ca09::3 52.101.68.0 52.101.68.39 52.101.73.22 52.101.73.28	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-db4pr02cu00307.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am7pr05cu00106.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

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.56

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records7 records 175ms

TXT Record
_glw3ftksekk9v4e6lz932f6x630u3cf
_j23mj9ohf6btts70o39mvenpaz1h7ic
_pawf7xqpltafa5i2sble4s0hhrl2pmn
_sh7kb10s5spur3o7b33gid81o6k9q9l
_vjt8ozxdb6wigbgz3b365jmnb0tw4e8
_ze5vjcukeut9b1ehj60iodley3ty68t
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (guardrails.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

🔗 TLSA / DANE

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

🔐 DNSSEC77ms

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

🏷️ SOA38ms

Field	Value
Serial	1
Primary NS (MNAME)	ns1-07.azure-dns.com
Responsible (RNAME)	azuredns-hostmaster@microsoft.com
Refresh	3600s
Retry	300s
Expire	2419200s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

38ms

A

47ms

MX

41ms

AAAA

37ms

TXT

175ms

CAA

31ms

HTTPS

42ms

TLSA

175ms

SOA

38ms

MTA-STS

35ms

DNSSEC

77ms

SRV

55ms

Total

1030ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-30 07:26:22	1030ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 19:53:13	1282ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 08:15:00	922ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 10:44:03	1106ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 10:39:05	879ms	4 NS 1 A 1 MX	🔒 Secure	View