ou.dk DNS records

🖥️ Nameservers3 records 35ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.sdu.dk	130.225.155.136	ns1.sdu.dk	AS1835 IDDQD-AS
ns2.sdu.dk	130.225.155.148	ns2.sdu.dk	AS1835 IDDQD-AS
ns3.sdu.dk	193.163.227.4	ns3.sdu.dk	AS44328 Region Syddanmark

🌍 A Records1 records 25ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
130.225.156.23	3600s	—	AS1835	IDDQD-AS	130.225.0.0/16	🇩🇰 Denmark	—

📧 MX Records1 records 25ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	. Null MX — domain accepts no email (RFC 7505)

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 195ms

TXT Record
v=spf1 -all

✉️ SPF

Policy	Record (ou.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC

Policy	Record (_dmarc.ou.dk)
p=reject	v=DMARC1; p=reject; sp=reject; rua=mailto:655b353a1f136@dmarc.centerasecurity.com;

📬 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)

🔐 DNSSEC95ms

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

🏷️ SOA0ms

Field	Value
Serial	2011097690
Primary NS (MNAME)	ns1.sdu.dk
Responsible (RNAME)	dns@it-service.sdu.dk
Refresh	14400s
Retry	1440s
Expire	3600000s
Minimum (neg-cache TTL)	86400s

📋 RegistrationWHOIS fetched 2026-08-22 01:39:22

Field	Value
Registrar	dns.services ApS
Registered	1998-02-03
Expires	2027-03-31 (210d)

📋 WHOIS

⏱️ Lookup Timing

NS

35ms

A

25ms

MX

25ms

AAAA

20ms

TXT

195ms

CAA

19ms

HTTPS

16032ms

TLSA

167ms

SOA

0ms

MTA-STS

60ms

DNSSEC

95ms

SRV

61ms

Total

16462ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 13:34:18	16462ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-30 06:56:36	17103ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 23:43:14	16347ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-24 03:52:59	18335ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-23 01:54:16	8873ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-22 01:38:25	6495ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-17 18:12:50	8536ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-16 02:51:12	8661ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-14 17:30:00	4669ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-10 21:31:54	4991ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-09 14:57:57	5916ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-07 18:26:12	4613ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-03 05:52:38	16487ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-29 13:35:05	4520ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-27 16:40:43	4446ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-24 15:44:09	4429ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-22 09:07:12	6680ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-21 01:02:07	2454ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-17 11:41:49	4373ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-13 15:58:12	4476ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-09 03:18:12	2728ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-02 12:28:16	4451ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-27 06:31:24	4421ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 13:02:27	1470ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 08:14:48	6645ms	3 NS 1 A 1 MX	🔒 Secure	View