skoletjek.dk DNS records

🖥️ Nameservers2 records 32ms

Nameserver	IP addresses	PTR	ASN / ISP
jo.ns.cloudflare.com	108.162.192.172 172.64.32.172 173.245.58.172 2606:4700:50::adf5:3aac 2803:f800:50::6ca2:c0ac 2a06:98c1:50::ac40:20ac	jo.ns.cloudflare.com jo.ns.cloudflare.com jo.ns.cloudflare.com jo.ns.cloudflare.com jo.ns.cloudflare.com jo.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
yichun.ns.cloudflare.com	108.162.193.248 172.64.33.248 173.245.59.248 2606:4700:58::adf5:3bf8 2803:f800:50::6ca2:c1f8 2a06:98c1:50::ac40:21f8	yichun.ns.cloudflare.com yichun.ns.cloudflare.com yichun.ns.cloudflare.com yichun.ns.cloudflare.com yichun.ns.cloudflare.com yichun.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.40.19	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.174.131	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)2 records 30ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3037::6815:2813	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:ae83	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 31ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.40.19,172.67.174.131 ech=AEX+DQBBkQAgACBN60Dn0G1V/kSfekq3+A6F0ajLKKPW0zZkelZB0zV2GAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3037::6815:2813,2606:4700:3037::ac43:ae83

📝 TXT Records

📝

No TXT records found

✉️ 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

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.skoletjek.dk	JhSSCrJAIS_LHw6Jjpr0EIQ3BYIKq2ZwdM6_aK6EDYw
TXT	_acme-challenge.skoletjek.dk	QHvKk7jTIite0aMBflLlwjA5dCNKb7buL3ajVGdTyjE

🔗 TLSA / DANE

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

🔐 DNSSEC104ms

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	2413541161
Primary NS (MNAME)	jo.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

32ms

A

33ms

MX

34ms

AAAA

30ms

TXT

151ms

CAA

31ms

HTTPS

31ms

TLSA

47ms

SOA

0ms

MTA-STS

46ms

DNSSEC

104ms

SRV

52ms

Total

547ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 11:50:06	547ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-29 05:56:41	495ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-29 07:57:21	3380ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-03 10:34:29	2709ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-29 23:33:33	651ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-25 21:58:46	690ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-24 06:17:42	1114ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-23 11:22:25	827ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-19 10:34:16	1301ms	2 NS 2 A 0 MX	⚠️ Bogus	View
2026-06-18 08:23:58	1173ms	2 NS 2 A 0 MX	🔓 Insecure	View