duu.dk DNS records

🖥️ Nameservers4 records 50ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.stil.dk	195.231.240.53 2a10:cf80:1000:0:195:231:240:53	ns01.stil.dk ns01.stil.dk	AS3240 Styrelsen for it og laering AS3240 Styrelsen for it og laering
ns02.stil.dk	195.231.128.53 2a10:cf80:2000:0:195:231:128:53	ns02.stil.dk ns02.stil.dk	AS3240 Styrelsen for it og laering AS3240 Styrelsen for it og laering
ns03.stil.dk	195.231.236.53 2a10:cf80:1000:0:195:231:236:53	ns03.stil.dk ns03.stil.dk	AS3240 Styrelsen for it og laering AS3240 Styrelsen for it og laering
ns04.stil.dk	195.231.129.53 2a10:cf80:2000:0:195:231:129:53	ns04.stil.dk ns04.stil.dk	AS3240 Styrelsen for it og laering AS3240 Styrelsen for it og laering

🌍 A Records1 records 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.231.240.38	3600s	—	AS3240	Styrelsen for it og laering	195.231.224.0/19	🇩🇰 Denmark	—

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 143ms

TXT Record
v=spf1 include:spf1.stil.dk ~all

✉️ SPF

Policy	Record (duu.dk)
~all (soft fail)	v=spf1 include:spf1.stil.dk ~all

📨 DMARC

Policy	Record (_dmarc.duu.dk)
p=reject	v=DMARC1; p=reject; sp=reject; rua=mailto:tcod1eh2@ag.eu.dmarcadvisor.com;

📬 MTA-STS

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records3 records 46ms

Flags	Tag	Value
0	iodef	mailto:netdrift@stil.dk
0	issue	letsencrypt.org;accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/119135076
0	issuewild	letsencrypt.org;accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/119135076

🔗 TLSA / DANE

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

🔐 DNSSEC97ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082701
Primary NS (MNAME)	ns01.stil.dk
Responsible (RNAME)	netdrift@stil.dk
Refresh	900s
Retry	300s
Expire	3600000s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

50ms

A

37ms

MX

43ms

AAAA

51ms

TXT

143ms

CAA

46ms

HTTPS

49ms

TLSA

4031ms

SOA

0ms

MTA-STS

60ms

DNSSEC

97ms

SRV

64ms

Total

4559ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 06:00:05	4559ms	4 NS 1 A 0 MX	🔒 Secure	View
2026-08-27 22:26:28	16388ms	4 NS 1 A 0 MX	🔒 Secure	View
2026-08-21 08:22:32	7339ms	4 NS 1 A 0 MX	🔒 Secure	View
2026-08-20 07:06:50	4844ms	4 NS 1 A 0 MX	🔒 Secure	View
2026-08-13 08:10:01	5958ms	4 NS 1 A 0 MX	🔒 Secure	View
2026-08-08 03:58:34	5307ms	4 NS 1 A 0 MX	🔒 Secure	View
2026-07-31 20:16:38	4712ms	4 NS 1 A 0 MX	🔒 Secure	View
2026-07-23 11:15:27	13675ms	4 NS 1 A 0 MX	🔒 Secure	View
2026-07-16 20:57:07	4826ms	4 NS 1 A 0 MX	🔒 Secure	View
2026-07-10 05:40:31	4920ms	4 NS 1 A 0 MX	🔒 Secure	View
2026-07-02 14:33:21	4741ms	4 NS 1 A 0 MX	🔒 Secure	View
2026-06-25 13:53:31	4650ms	4 NS 1 A 0 MX	🔒 Secure	View
2026-06-19 18:32:19	8381ms	4 NS 1 A 0 MX	🔒 Secure	View
2026-06-17 05:05:59	4480ms	4 NS 1 A 0 MX	🔒 Secure	View