33f.dk

📜 Historical scan 2026-08-29 17:40:55 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

33f.dk is a .dk domain served by 2 nameservers (jay.ns.cloudflare.com, uma.ns.cloudflare.com). It was registered on 14 August 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.55.186 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 34ms

Nameserver	IP addresses	PTR	ASN / ISP
jay.ns.cloudflare.com	108.162.193.123 172.64.33.123 173.245.59.123 2606:4700:58::adf5:3b7b 2803:f800:50::6ca2:c17b 2a06:98c1:50::ac40:217b	jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
uma.ns.cloudflare.com	108.162.192.146 172.64.32.146 173.245.58.146 2606:4700:50::adf5:3a92 2803:f800:50::6ca2:c092 2a06:98c1:50::ac40:2092	uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.55.186	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.172.32	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
2606:4700:3036::6815:37ba	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:ac20	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 35ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.55.186,172.67.172.32 ech=AEX+DQBBwQAgACAlXGmsP7yjuE91KEMvn0SqbPVQTsh3mM/Qh4AN9hyEGAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3036::6815:37ba,2606:4700:3037::ac43:ac20

📝 TXT Records#

1 records 139ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (33f.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.33f.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-09 03:13:47

www	104.21.55.186 172.67.172.32 2606:4700:3036::6815:37ba 2606:4700:3037::ac43:ac20 (AS13335) (address records, no CNAME)
www vs bare domain	Same network 33f.dk: 104.21.55.186 172.67.172.32 2606:4700:3036::6815:37ba 2606:4700:3037::ac43:ac20 (AS13335) www.33f.dk: 104.21.55.186 172.67.172.32 2606:4700:3036::6815:37ba 2606:4700:3037::ac43:ac20 (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.33f.dk	1ZYeoYVr1EbhtUOX2d98zytL8SAHgZrJp3l4Dka1cao
TXT	_acme-challenge.33f.dk	gmqX_ud3zdW1XThIKVpCAhnea-URawI23tK97u4V72M

🔗 TLSA / DANE#

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

🔐 DNSSEC#

101ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2413441089
Primary NS (MNAME)	jay.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-08-29 17:41:51

Field	Value
Registrar	Simply.com A/S
Registered	2019-08-14
Expires	2027-08-31 (318d)

📋 WHOIS#

⏱️ Lookup Timing#

34ms

33ms

AAAA

34ms

TXT

139ms

CAA

34ms

HTTPS

35ms

TLSA

43ms

SOA

0ms

MTA-STS

46ms

DNSSEC

101ms

SRV

49ms

Total

488ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 03:13:47	414ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-28 07:08:47	569ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-09 17:47:10	617ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-30 21:07:36	1197ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-29 17:40:55 shown	488ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-06 23:37:42	975ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-25 13:35:50	3415ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-16 13:12:55	460ms	2 NS 2 A 0 MX	🔓 Insecure