rentnu.dk DNS records

🖥️ Nameservers2 records 55ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dnsserver.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.dnsserver.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 Records

🌍

No A records found

📧 MX Records1 records 57ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	10800s	rentnu-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca09::1 2a01:111:f403:ca09::2 2a01:111:f403:ca09::f 52.101.68.16 52.101.68.18 52.101.73.16 52.101.73.6	mail-db7pr03cu00601.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am6pr04cu00306.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 → 40.98.16.43

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 2044ms

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

📝 TXT Records2 records 216ms

TXT Record
MS=ms91462116
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (rentnu.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.rentnu.dk)
p=reject	v=DMARC1; p=reject; adkim=s; aspf=s;

📬 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)

🔐 DNSSEC135ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA41ms

Field	Value
Serial	2025122201
Primary NS (MNAME)	ns1.dnsserver.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

55ms

A

40ms

MX

57ms

AAAA

58ms

TXT

216ms

CAA

47ms

HTTPS

57ms

TLSA

667ms

SOA

41ms

MTA-STS

137ms

DNSSEC

135ms

SRV

2044ms

Total

3115ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-20 00:19:02	3115ms	2 NS 0 A 1 MX	🔒 Secure	View
2026-06-17 23:32:08	2669ms	2 NS 0 A 1 MX	🔒 Secure	View