ztu.dk

📜 Historical scan 2026-09-23 13:36:22 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ztu.dk is a .dk domain served by 2 nameservers (anita.ns.cloudflare.com, fattouche.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.88.39 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 60ms

Nameserver	IP addresses	PTR	ASN / ISP
anita.ns.cloudflare.com	108.162.194.82 162.159.38.82 172.64.34.82 2606:4700:50::a29f:2652 2803:f800:50::6ca2:c252 2a06:98c1:50::ac40:2252	anita.ns.cloudflare.com anita.ns.cloudflare.com anita.ns.cloudflare.com anita.ns.cloudflare.com anita.ns.cloudflare.com anita.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
fattouche.ns.cloudflare.com	108.162.195.48 162.159.44.48 172.64.35.48 2606:4700:58::a29f:2c30 2803:f800:50::6ca2:c330 2a06:98c1:50::ac40:2330	fattouche.ns.cloudflare.com fattouche.ns.cloudflare.com fattouche.ns.cloudflare.com fattouche.ns.cloudflare.com fattouche.ns.cloudflare.com fattouche.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.88.39	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.172.73	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	172.67.172.73
🔶 Autoconfig	104.21.88.39

🔷 AAAA Records (IPv6)#

2 records 65ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::6815:5827	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::ac43:ac49	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 45ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.88.39,172.67.172.73 ech=AEX+DQBBSwAgACD11o6crS/bLU3TWG3c5Ae/Qe5+Db736R+swrunvTY7YwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:5827,2606:4700:3036::ac43:ac49

📝 TXT Records#

1 records 213ms

TXT Record
MS=ms97125873

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 2026-10-17 17:31:32

www	104.21.88.39 172.67.172.73 2606:4700:3035::6815:5827 2606:4700:3036::ac43:ac49 (AS13335) (address records, no CNAME)
www vs bare domain	Same network ztu.dk: 104.21.88.39 172.67.172.73 2606:4700:3035::6815:5827 2606:4700:3036::ac43:ac49 (AS13335) www.ztu.dk: 104.21.88.39 172.67.172.73 2606:4700:3035::6815:5827 2606:4700:3036::ac43:ac49 (AS13335)
Wildcard	Yes: any name under the zone resolves

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.ztu.dk	DhLO5DPB3GyQCBG6tdgHmxMbK6C7ydQEvKJNABMCSnE
TXT	_acme-challenge.ztu.dk	mnodA8WFFD1uTCSxLNDVAwOkVm8SpRr_ckKnMEisWtA

🔗 TLSA / DANE#

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

🔐 DNSSEC#

126ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2415614497
Primary NS (MNAME)	anita.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

60ms

51ms

41ms

AAAA

65ms

TXT

213ms

CAA

38ms

HTTPS

45ms

TLSA

66ms

SOA

0ms

MTA-STS

66ms

DNSSEC

126ms

SRV

89ms

Total

698ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 22:15:18	529ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-30 05:05:48	638ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-24 14:15:09	1637ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-23 13:36:22 shown	698ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-04 03:11:41	463ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-26 02:05:16	1814ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-05 23:13:44	1460ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-26 15:02:37	1773ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-25 20:27:36	2049ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-19 13:17:10	3612ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-17 20:20:49	1598ms	2 NS 2 A 0 MX	🔓 Insecure