sdfe.dk DNS records

🖥️ Nameservers2 records 55ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records1 records 52ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
23.88.5.125	43200s	static.125.5.88.23.clients.your-server.de	AS24940	Hetzner Online GmbH	23.88.0.0/17	🇩🇪 Germany	Falkenstein

📧 MX Records8 records 51ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	mx01.statens-it.dk	194.182.109.217	mx01.statens-it.dk	AS58282 Statens IT
10	600s	mx02.statens-it.dk	194.182.109.218	mx02.statens-it.dk	AS58282 Statens IT
10	600s	mx03.statens-it.dk	194.182.109.219	mx03.statens-it.dk	AS58282 Statens IT
10	600s	mx04.statens-it.dk	194.182.109.220	mx04.statens-it.dk	AS58282 Statens IT
10	600s	mx05.statens-it.dk	194.182.109.221	mx05.statens-it.dk	AS58282 Statens IT
10	600s	mx06.statens-it.dk	194.182.109.222	mx06.statens-it.dk	AS58282 Statens IT
10	600s	mx07.statens-it.dk	194.182.109.223	mx07.statens-it.dk	AS58282 Statens IT
10	600s	mx08.statens-it.dk	194.182.109.224	mx08.statens-it.dk	AS58282 Statens IT

🔷 AAAA Records (IPv6)1 records 47ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a01:4f8:272:3c81::2	43200s	—	AS24940	Hetzner Online GmbH	2a01:4f8:0:0:0:0:0:0/31	🇩🇪 Germany	Falkenstein

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 316ms

TXT Record
v=spf1 include:_spf.sitnet.dk -all

✉️ SPF

Policy	Record (sdfe.dk)
-all (hard fail)	v=spf1 include:_spf.sitnet.dk -all

📨 DMARC

Policy	Record (_dmarc.sdfe.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 Records

✗ No CAA records — any CA may issue certificates

🔗 TLSA / DANE16 records 309ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx01.statens-it.dk	DANE-EE · Full cert · SHA-512	8A12C2B7C0B5B6A9B6026C875909858F…
SMTP _25._tcp.mx01.statens-it.dk	DANE-EE · Full cert · SHA-512	1DFC9477DAE259CF5EC3C684DAAEEA6C…
SMTP _25._tcp.mx02.statens-it.dk	DANE-EE · Full cert · SHA-512	8A12C2B7C0B5B6A9B6026C875909858F…
SMTP _25._tcp.mx02.statens-it.dk	DANE-EE · Full cert · SHA-512	1DFC9477DAE259CF5EC3C684DAAEEA6C…
SMTP _25._tcp.mx03.statens-it.dk	DANE-EE · Full cert · SHA-512	1DFC9477DAE259CF5EC3C684DAAEEA6C…
SMTP _25._tcp.mx03.statens-it.dk	DANE-EE · Full cert · SHA-512	8A12C2B7C0B5B6A9B6026C875909858F…
SMTP _25._tcp.mx04.statens-it.dk	DANE-EE · Full cert · SHA-512	8A12C2B7C0B5B6A9B6026C875909858F…
SMTP _25._tcp.mx04.statens-it.dk	DANE-EE · Full cert · SHA-512	1DFC9477DAE259CF5EC3C684DAAEEA6C…
SMTP _25._tcp.mx05.statens-it.dk	DANE-EE · Full cert · SHA-512	8A12C2B7C0B5B6A9B6026C875909858F…
SMTP _25._tcp.mx05.statens-it.dk	DANE-EE · Full cert · SHA-512	1DFC9477DAE259CF5EC3C684DAAEEA6C…
SMTP _25._tcp.mx06.statens-it.dk	DANE-EE · Full cert · SHA-512	8A12C2B7C0B5B6A9B6026C875909858F…
SMTP _25._tcp.mx06.statens-it.dk	DANE-EE · Full cert · SHA-512	1DFC9477DAE259CF5EC3C684DAAEEA6C…
SMTP _25._tcp.mx07.statens-it.dk	DANE-EE · Full cert · SHA-512	1DFC9477DAE259CF5EC3C684DAAEEA6C…
SMTP _25._tcp.mx07.statens-it.dk	DANE-EE · Full cert · SHA-512	8A12C2B7C0B5B6A9B6026C875909858F…
SMTP _25._tcp.mx08.statens-it.dk	DANE-EE · Full cert · SHA-512	8A12C2B7C0B5B6A9B6026C875909858F…
SMTP _25._tcp.mx08.statens-it.dk	DANE-EE · Full cert · SHA-512	1DFC9477DAE259CF5EC3C684DAAEEA6C…

🔐 DNSSEC87ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082102
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

55ms

A

52ms

MX

51ms

AAAA

47ms

TXT

316ms

CAA

46ms

HTTPS

42ms

TLSA

309ms

SOA

0ms

MTA-STS

63ms

DNSSEC

87ms

SRV

77ms

Total

1771ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 12:01:16	1771ms	2 NS 1 A 8 MX	🔒 Secure	View
2026-08-31 23:00:57	10065ms	2 NS 0 A 8 MX	🔒 Secure	View
2026-08-28 02:05:57	1195ms	2 NS 1 A 8 MX	🔒 Secure	View
2026-08-22 01:02:21	5989ms	2 NS 1 A 8 MX	🔒 Secure	View
2026-06-29 05:34:59	1554ms	2 NS 1 A 8 MX	🔒 Secure	View
2026-06-25 05:01:04	1626ms	2 NS 1 A 8 MX	🔒 Secure	View
2026-06-23 10:08:59	1120ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 18:08:42	2128ms	2 NS 1 A 8 MX	🔒 Secure	View