opgavefeedback.dk DNS records

🖥️ Nameservers2 records 71ms

Nameserver	IP addresses	PTR	ASN / ISP
faye.ns.cloudflare.com	108.162.194.180 162.159.38.180 172.64.34.180 2606:4700:50::a29f:26b4 2803:f800:50::6ca2:c2b4 2a06:98c1:50::ac40:22b4	faye.ns.cloudflare.com faye.ns.cloudflare.com faye.ns.cloudflare.com faye.ns.cloudflare.com faye.ns.cloudflare.com faye.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
ignat.ns.cloudflare.com	108.162.195.19 162.159.44.19 172.64.35.19 2606:4700:58::a29f:2c13 2803:f800:50::6ca2:c313 2a06:98c1:50::ac40:2313	ignat.ns.cloudflare.com ignat.ns.cloudflare.com ignat.ns.cloudflare.com ignat.ns.cloudflare.com ignat.ns.cloudflare.com ignat.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 90ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.8.239	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.158.31	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)2 records 83ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::6815:8ef	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:9e1f	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 114ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.8.239,172.67.158.31 ech=AEX+DQBB/gAgACAEG/7Brqe/fvQzazr919c4T8/5fb5mXjy6SOggZUQaaAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:8ef,2606:4700:3037::ac43:9e1f

📝 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.opgavefeedback.dk	c6OCj_yYHR0Q7QFDtKpV70cRwCS9LNSuE1iRniFmZAk
TXT	_acme-challenge.opgavefeedback.dk	rWK-93M-364UsRYtjPQG-ZJCIpwFeU0zLE4YjkNwWyA

🔗 TLSA / DANE

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

🔐 DNSSEC237ms

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	2413677623
Primary NS (MNAME)	faye.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

71ms

A

90ms

MX

93ms

AAAA

83ms

TXT

334ms

CAA

101ms

HTTPS

114ms

TLSA

135ms

SOA

0ms

MTA-STS

209ms

DNSSEC

237ms

SRV

189ms

Total

1150ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 19:02:57	1150ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-27 02:15:00	588ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-03 16:21:03	3683ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-29 04:22:31	830ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-28 16:16:14	918ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-24 01:46:03	944ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-21 10:41:08	1358ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-20 22:00:16	2503ms	4 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-19 09:53:11	897ms	4 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-17 15:07:38	847ms	4 NS 1 A 1 MX	❓ Unknown	View