tnu.dk

📜 Historical scan 2026-09-26 19:02:31 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tnu.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 152.53.238.209 is hosted by netcup GmbH (AS197540) in Germany. Mail is handled by .. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 39ms

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 Records#

1 records 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
152.53.238.209	43200s	v2202601329288424748.supersrv.de	AS197540	netcup GmbH	152.53.236.0/22	🇩🇪 Germany	Nuremberg

📧 MX Records#

1 records 54ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	. Null MX — domain accepts no email (RFC 7505)

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	152.53.238.209
🔶 Autoconfig	152.53.238.209

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 190ms

TXT Record
v=spf1 +a +mx +a:v2202601329288424748.supersrv.de -all

✉️ SPF#

Policy	Record (tnu.dk)
-all (hard fail)	v=spf1 +a +mx +a:v2202601329288424748.supersrv.de -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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-12 06:44:39

www	152.53.238.209 (AS197540) (address records, no CNAME)
www vs bare domain	Same network tnu.dk: 152.53.238.209 (AS197540) www.tnu.dk: 152.53.238.209 (AS197540)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.tnu.dk	c1KT4fy_ERJGBYGQQvBmn6VRrX9d5bZN0bRZBTu5h1E
TXT	_acme-challenge.tnu.dk	tIbFkvb9PFxnjY_Bc_0WvrPzNukSz0ctYd-N2k9kdtA

🔗 TLSA / DANE#

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

🔐 DNSSEC#

90ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026091001
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 yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

39ms

54ms

AAAA

50ms

TXT

190ms

CAA

38ms

HTTPS

32ms

TLSA

94ms

SOA

0ms

MTA-STS

81ms

DNSSEC

90ms

SRV

63ms

Total

538ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 06:44:39	421ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-05 20:50:31	633ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 19:02:31 shown	538ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-13 06:40:19	595ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-12 07:00:18	779ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-17 23:15:49	8786ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-12 21:44:34	590ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-28 03:56:19	713ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 04:27:05	1176ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-22 14:44:25	665ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 11:37:22	1014ms	2 NS 1 A 0 MX	🔒 Secure