heiberg-sp.dk DNS records

🖥️ Nameservers2 records 38ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records1 records 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
87.51.2.4	900s	—	AS3292	TDC Holding A/S	87.48.0.0/13	🇩🇰 Denmark	Aarhus

📧 MX Records1 records 43ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	heibergsp-dk01i.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca04::5 2a01:111:f403:ca09::9 2a01:111:f403:ca48::c 52.101.209.153 52.101.68.5 52.101.68.8 52.101.73.11	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db3pr0202cu00205.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am1pr04cu00103.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
🔶 Autoconfig	87.51.2.4

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 58ms

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

📝 TXT Records2 records 152ms

TXT Record
MS=ms83544817
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (heiberg-sp.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)

🔐 DNSSEC89ms

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

🏷️ SOA0ms

Field	Value
Serial	2021111801
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

38ms

A

41ms

MX

43ms

AAAA

29ms

TXT

152ms

CAA

46ms

HTTPS

58ms

TLSA

370ms

SOA

0ms

MTA-STS

69ms

DNSSEC

89ms

SRV

58ms

Total

986ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 19:08:29	986ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 01:46:01	1218ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 19:41:23	1148ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 19:29:46	1108ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 10:58:09	1423ms	2 NS 1 A 1 MX	🔒 Secure	View