jku.dk DNS records

🖥️ Nameservers2 records 39ms

Nameserver	IP addresses	PTR	ASN / ISP
tani.ns.cloudflare.com	108.162.192.224 172.64.32.224 173.245.58.224 2606:4700:50::adf5:3ae0 2803:f800:50::6ca2:c0e0 2a06:98c1:50::ac40:20e0	tani.ns.cloudflare.com tani.ns.cloudflare.com tani.ns.cloudflare.com tani.ns.cloudflare.com tani.ns.cloudflare.com tani.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
zeus.ns.cloudflare.com	108.162.193.249 172.64.33.249 173.245.59.249 2606:4700:58::adf5:3bf9 2803:f800:50::6ca2:c1f9 2a06:98c1:50::ac40:21f9	zeus.ns.cloudflare.com zeus.ns.cloudflare.com zeus.ns.cloudflare.com zeus.ns.cloudflare.com zeus.ns.cloudflare.com zeus.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 59ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.26.63	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.135.147	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	spamrelay.zxcs.nl	185.104.28.12 2a06:2ec0:1::ffec	spamrelay.zxcs.nl spamrelay.zxcs.nl	AS206281 Stichting DIGI NL AS206281 Stichting DIGI NL

🔷 AAAA Records (IPv6)2 records 43ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:1a3f	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3031::ac43:8793	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 43ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.26.63,172.67.135.147 ech=AEX+DQBB7gAgACBJTfPrZ2jCuFd4HBXXw+B1+cpGfFNtc8NeRC/5OpY/KAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:1a3f,2606:4700:3031::ac43:8793

📝 TXT Records2 records 231ms

TXT Record
google-site-verification=kfIvjoNXBJlX1QrzLjunUgrfOF0VO1NOtpdCIlNfiBM
v=spf1 a mx ip4:185.104.29.152 ip6:2a06:2ec0:1::158 include:filter-out.zxcs.nl ~all

✉️ SPF

Policy	Record (jku.dk)
~all (soft fail)	v=spf1 a mx ip4:185.104.29.152 ip6:2a06:2ec0:1::158 include:filter-out.zxcs.nl ~all

📨 DMARC

Policy	Record (_dmarc.jku.dk)
p=none (monitor only)	v=DMARC1; p=none; sp=none;

📬 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 / DANE3 records 167ms

Service / Owner	Type	Cert association
SMTP _25._tcp.spamrelay.zxcs.nl	DANE-EE · SPKI · SHA-256	6D714328138B75C5845E6E154F40B899…
SMTP _25._tcp.spamrelay.zxcs.nl	DANE-TA · SPKI · SHA-256	E1AE9C3DE848ECE1BA72E0D991AE4D0D…
SMTP _25._tcp.spamrelay.zxcs.nl	DANE-TA · SPKI · SHA-256	6BD9212CE649C659C9CABC6CB60FCFFA…

🔐 DNSSEC124ms

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

🏷️ SOA0ms

Field	Value
Serial	2411310711
Primary NS (MNAME)	tani.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

39ms

A

59ms

MX

40ms

AAAA

43ms

TXT

231ms

CAA

45ms

HTTPS

43ms

TLSA

167ms

SOA

0ms

MTA-STS

53ms

DNSSEC

124ms

SRV

96ms

Total

1124ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-07 11:07:23	1124ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-22 19:28:09	2708ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-30 18:55:43	1111ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-23 00:16:36	1310ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-18 06:31:33	1242ms	2 NS 2 A 1 MX	🔓 Insecure	View