ac-heiberg.dk DNS records

🖥️ Nameservers4 records 41ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.bdm.microsoftonline.com	13.107.236.208 2603:1061:0:700::d0	ns1-208.azure-dns.com ns1-208.azure-dns.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns2.bdm.microsoftonline.com	150.171.21.208 2620:1ec:8ec:700::d0	ns2-208.azure-dns.net ns2-208.azure-dns.net	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns3.bdm.microsoftonline.com	204.14.183.208 2a01:111:4000:700::d0	ns3-208.azure-dns.org ns3-208.azure-dns.org	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns4.bdm.microsoftonline.com	208.84.5.208 2620:1ec:bda:700::d0	ns4-208.azure-dns.info ns4-208.azure-dns.info	AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🌍 A Records1 records 43ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
149.28.175.58	3600s	149.28.175.58.vultrusercontent.com	AS20473	The Constant Company, LLC	149.28.128.0/17	🇦🇺 Australia	Sydney

📧 MX Records1 records 7ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	acheiberg-dk0e.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::7 2a01:111:f403:ca09:: 2a01:111:f403:ca09::f 52.101.68.10 52.101.68.29 52.101.68.36 52.101.73.153	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db4pr02cu00307.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-as8pr05cu00401.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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 71ms

TXT Record
mscid=K5taZdex2R0KAE9ZImGeqJ6kwg/Gv2ypSV8iCTAbQ32KUwS6YKLyGyZBUARksJIEkMMTf6KKY8TKAzJ3wtHVlg==
v=spf1 include:spf.protection.outlook.com include:_spf.elasticemail.com -all

✉️ SPF

Policy	Record (ac-heiberg.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:_spf.elasticemail.com -all

📨 DMARC

Policy	Record (_dmarc.ac-heiberg.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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)

🔐 DNSSEC183ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA41ms

Field	Value
Serial	1
Primary NS (MNAME)	ns1.bdm.microsoftonline.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

41ms

A

43ms

MX

7ms

AAAA

7ms

TXT

71ms

CAA

9ms

HTTPS

48ms

TLSA

1049ms

SOA

41ms

MTA-STS

14ms

DNSSEC

183ms

SRV

0ms

Total

3711ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-16 17:44:24	3711ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-24 02:29:14	5283ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-22 06:32:14	1170ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 03:16:36	2597ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-16 12:42:36	823ms	4 NS 1 A 1 MX	🔓 Insecure	View