3n.dk

📜 Historical scan 2026-09-09 17:51:19 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

3n.dk is a .dk domain served by 2 nameservers (kinsley.ns.cloudflare.com, nero.ns.cloudflare.com). It was registered on 21 July 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.66.234 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and 2 more. The zone is DNSSEC-signed and validates, 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 58ms

Nameserver	IP addresses	PTR	ASN / ISP
kinsley.ns.cloudflare.com	108.162.194.75 162.159.38.75 172.64.34.75 2606:4700:50::a29f:264b 2803:f800:50::6ca2:c24b 2a06:98c1:50::ac40:224b	kinsley.ns.cloudflare.com kinsley.ns.cloudflare.com kinsley.ns.cloudflare.com kinsley.ns.cloudflare.com kinsley.ns.cloudflare.com kinsley.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
nero.ns.cloudflare.com	108.162.195.28 162.159.44.28 172.64.35.28 2606:4700:58::a29f:2c1c 2803:f800:50::6ca2:c31c 2a06:98c1:50::ac40:231c	nero.ns.cloudflare.com nero.ns.cloudflare.com nero.ns.cloudflare.com nero.ns.cloudflare.com nero.ns.cloudflare.com nero.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 56ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.66.234	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.209.88	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

4 records 63ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
20	300s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1a	yukulwh-in-f27.1e100.net mad01s14-in-f27.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
30	300s	alt3.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1a	so-in-f27.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
50	300s	alt5.aspmx.l.google.com	192.178.230.27 2404:6800:400b:c01b::1b	yunrtab-in-f27.1e100.net yunrtab-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

2 records 79ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3036::ac43:d158	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:42ea	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 77ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.66.234,172.67.209.88 ech=AEX+DQBBDwAgACAmBEokkx8JzD9rDa/pPE7iwWVsTXtMyQcv8/2Nb3ZGQQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3036::ac43:d158,2606:4700:3037::6815:42ea

📝 TXT Records#

2 records 225ms

TXT Record
have-i-been-pwned-verification=256e2f9bd55135b899aecb396d43311a
v=spf1 -all

✉️ SPF#

Policy	Record (3n.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.3n.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:3dc05e2f8b2040598eb6f51c1e1d82b8@dmarc-reports.cloudflare.net
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 2026-10-16 12:12:23

www	Exists, no address
www vs bare domain	www does not resolve 3n.dk: 104.21.66.234 172.67.209.88 2606:4700:3036::ac43:d158 2606:4700:3037::6815:42ea (AS13335) www.3n.dk: no address (all like this)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

7 found

Selector	CNAME	Key
default	—	Revoked (empty key)
dkim	—	Revoked (empty key)
google	—	Revoked (empty key)
k1	—	Revoked (empty key)
mail	—	Revoked (empty key)
s1	—	Revoked (empty key)
s2	—	Revoked (empty key)

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.3n.dk	4KjZN15sEUkcX3PQ_awcWFfWMsU7EcmnXjDBBhqMTp8
TXT	_acme-challenge.3n.dk	xulrout5RLXrKJXO-lc7_WzLRUjZst391cY9OJJ03VA

🔗 TLSA / DANE#

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

🔐 DNSSEC#

153ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2414159108
Primary NS (MNAME)	kinsley.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-16 12:30:07

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2008-07-21
Expires	2031-07-31 (1747d)

🔗 Same registrant#

3 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
citius.dk	Punktum dk A/S (direct)
it-byen.dk	Punktum dk A/S (direct)
vedel.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

58ms

56ms

63ms

AAAA

79ms

TXT

225ms

CAA

76ms

HTTPS

77ms

TLSA

187ms

SOA

0ms

MTA-STS

102ms

DNSSEC

153ms

SRV

120ms

Total

5170ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 12:12:23	794ms	2 NS 2 A 4 MX	🔒 Secure
2026-10-08 04:20:01	745ms	2 NS 2 A 4 MX	🔒 Secure
2026-09-22 13:20:43	2866ms	2 NS 2 A 4 MX	🔒 Secure
2026-09-18 09:54:13	908ms	2 NS 2 A 4 MX	🔒 Secure
2026-09-14 20:31:08	5440ms	2 NS 2 A 4 MX	🔒 Secure
2026-09-10 23:34:54	3247ms	2 NS 2 A 4 MX	🔒 Secure
2026-09-09 17:51:19 shown	5170ms	2 NS 2 A 4 MX	🔒 Secure
2026-09-03 21:25:56	9821ms	2 NS 2 A 4 MX	🔒 Secure
2026-08-30 22:55:22	696ms	2 NS 2 A 4 MX	🔒 Secure
2026-08-29 09:27:21	1074ms	2 NS 2 A 4 MX	🔒 Secure
2026-08-28 04:28:50	1820ms	2 NS 2 A 4 MX	🔒 Secure
2026-08-07 20:28:27	1713ms	2 NS 2 A 4 MX	🔒 Secure
2026-07-16 17:23:59	1292ms	2 NS 2 A 4 MX	🔒 Secure
2026-07-13 18:51:40	17079ms	2 NS 2 A 4 MX	🔒 Secure
2026-07-07 02:25:51	4105ms	2 NS 2 A 4 MX	🔒 Secure
2026-07-04 21:47:56	3419ms	2 NS 2 A 4 MX	🔒 Secure
2026-07-01 21:17:49	1410ms	2 NS 2 A 4 MX	🔒 Secure
2026-06-18 10:02:14	3230ms	2 NS 2 A 4 MX	🔒 Secure
2026-06-16 13:00:27	2164ms	2 NS 2 A 4 MX	🔒 Secure