otterupgymnasterne.dk DNS records

🖥️ Nameservers2 records 81ms

Nameserver	IP addresses	PTR	ASN / ISP
duke.ns.cloudflare.com	108.162.193.110 172.64.33.110 173.245.59.110 2606:4700:58::adf5:3b6e 2803:f800:50::6ca2:c16e 2a06:98c1:50::ac40:216e	duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
kiki.ns.cloudflare.com	108.162.192.180 172.64.32.180 173.245.58.180 2606:4700:50::adf5:3ab4 2803:f800:50::6ca2:c0b4 2a06:98c1:50::ac40:20b4	kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 50ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.2.252	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.129.243	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)2 records 52ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:81f3	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3032::6815:2fc	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 67ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.2.252,172.67.129.243 ech=AEX+DQBBzwAgACBTSB3apXixaEI71fZoMKUzij6ilRhhH7A4KRauzohfNQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:81f3,2606:4700:3032::6815:2fc

📝 TXT Records1 records 214ms

TXT Record
v=spf1 mx a ip4:84.19.174.8 -all

✉️ SPF

Policy	Record (otterupgymnasterne.dk)
-all (hard fail)	v=spf1 mx a ip4:84.19.174.8 -all

📨 DMARC

Policy	Record (_dmarc.otterupgymnasterne.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@zakobo.dk; ruf=mailto:dmarc@zakobo.dk

📬 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 / DANE

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

🔐 DNSSEC105ms

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	2411962857
Primary NS (MNAME)	duke.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

81ms

A

50ms

MX

74ms

AAAA

52ms

TXT

214ms

CAA

83ms

HTTPS

67ms

TLSA

52ms

SOA

0ms

MTA-STS

104ms

DNSSEC

105ms

SRV

109ms

Total

658ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 03:47:05	658ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-11 23:32:15	2183ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-30 15:06:23	8867ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-27 01:10:52	760ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-24 03:31:41	851ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-18 08:51:18	2530ms	2 NS 2 A 0 MX	🔓 Insecure	View