fourfeldtskolen.dk DNS records

🖥️ Nameservers2 records 32ms

Nameserver	IP addresses	PTR	ASN / ISP
brit.ns.cloudflare.com	108.162.192.78 172.64.32.78 173.245.58.78 2606:4700:50::adf5:3a4e 2803:f800:50::6ca2:c04e 2a06:98c1:50::ac40:204e	brit.ns.cloudflare.com brit.ns.cloudflare.com brit.ns.cloudflare.com brit.ns.cloudflare.com brit.ns.cloudflare.com brit.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
mack.ns.cloudflare.com	108.162.195.37 162.159.44.37 172.64.35.37 2606:4700:58::a29f:2c25 2803:f800:50::6ca2:c325 2a06:98c1:50::ac40:2325	mack.ns.cloudflare.com mack.ns.cloudflare.com mack.ns.cloudflare.com mack.ns.cloudflare.com mack.ns.cloudflare.com mack.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
104.21.43.11	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.215.178	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)2 records 34ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3037::6815:2b0b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:d7b2	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 32ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.43.11,172.67.215.178 ech=AEX+DQBBQQAgACD6JAL7wCVGaNnNNZ2DAoPLY4sKpHVPSlu0sOmhFR3aDQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3037::6815:2b0b,2606:4700:3037::ac43:d7b2

📝 TXT Records1 records 242ms

TXT Record
v=spf1 -all

✉️ SPF

Policy	Record (fourfeldtskolen.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC

Policy	Record (_dmarc.fourfeldtskolen.dk)
p=reject	v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s;

📬 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)

🔐 DNSSEC53ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA0ms

Field	Value
Serial	2411238460
Primary NS (MNAME)	brit.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

31ms

AAAA

34ms

TXT

242ms

CAA

54ms

HTTPS

32ms

TLSA

48ms

SOA

0ms

MTA-STS

67ms

DNSSEC

53ms

SRV

105ms

Total

926ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 11:10:46	2561ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-08-27 18:46:46	529ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-08-04 12:14:17	926ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-07-11 21:30:32	913ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-07-06 16:49:20	1050ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-07-05 11:29:18	1224ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-07-03 12:13:31	1248ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-06-25 05:06:41	603ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-06-23 21:06:48	1167ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 10:37:01	10582ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-06-17 10:33:11	778ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-06-17 10:31:46	608ms	2 NS 2 A 0 MX	🔒 Secure	View