doubble.dk

📜 Historical scan 2026-09-23 20:33:40 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

doubble.dk is a .dk domain served by 2 nameservers (ariella.ns.cloudflare.com, kayden.ns.cloudflare.com). It was registered on 1 June 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.26.4.116 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. 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 42ms

Nameserver	IP addresses	PTR	ASN / ISP
ariella.ns.cloudflare.com	108.162.194.32 162.159.38.32 172.64.34.32 2606:4700:50::a29f:2620 2803:f800:50::6ca2:c220 2a06:98c1:50::ac40:2220	ariella.ns.cloudflare.com ariella.ns.cloudflare.com ariella.ns.cloudflare.com ariella.ns.cloudflare.com ariella.ns.cloudflare.com ariella.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
kayden.ns.cloudflare.com	108.162.195.74 162.159.44.74 172.64.35.74 2606:4700:58::a29f:2c4a 2803:f800:50::6ca2:c34a 2a06:98c1:50::ac40:234a	kayden.ns.cloudflare.com kayden.ns.cloudflare.com kayden.ns.cloudflare.com kayden.ns.cloudflare.com kayden.ns.cloudflare.com kayden.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

3 records 53ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.26.4.116	300s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
104.26.5.116	300s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
172.67.69.181	300s	—	AS13335	Cloudflare, Inc.	172.67.64.0/18	—	—

📧 MX Records#

5 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	2a00:1450:4010:c01::1a 2a00:1450:4010:c01::1a 64.233.164.26	lh-in-f26.1e100.net lh-in-x1a.1e100.net lf-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1b	lcdels-in-f27.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	300s	alt3.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1b	so-in-f26.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt4.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1a	tp-in-f27.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

3 records 60ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:20::681a:474	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::681a:574	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::ac43:45b5	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—

🔐 HTTPS Records#

1 records 57ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.26.4.116,104.26.5.116,172.67.69.181 ech=AEX+DQBBdQAgACBTPg8rwe7rLhavdc/3NydO7goOyoEhAF7G1QMqKOZiIgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:20::681a:474,2606:4700:20::681a:574,2606:4700:20::ac43:45b5

📝 TXT Records#

4 records 178ms

TXT Record
google-site-verification=MpbBaZCegztJZEEnu8lB9hLxsCy8FXUIyNHS3p-0Zng
google-site-verification=X4Pa6RKB5Kxcfw-fgC-30so5BRF4NnHTkwvAnlGEZYU
have-i-been-pwned-verification=dweb_bfoi5k828cg1bluogm7chqgs
v=spf1 include:_spf.google.com -all

✉️ SPF#

Policy	Record (doubble.dk)
-all (hard fail)	v=spf1 include:_spf.google.com -all

📨 DMARC#

Policy	Record (_dmarc.doubble.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:06ff55aabbf048c381017dc60c8e3fc9@dmarc-reports.cloudflare.net,mailto:dmarc@doubble.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-10 15:55:40

www	NXDOMAIN
www vs bare domain	www does not resolve doubble.dk: 104.26.4.116 104.26.5.116 172.67.69.181 2a06:98c1:3120::1 (AS13335) www.doubble.dk: no address (all like this)
Wildcard	No

✍️ DKIM keys#

3 found

Selector	CNAME	Key
google	—	RSA · ~2048 bit
s1	s1.domainkey.u22664365.wl116.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u22664365.wl116.sendgrid.net	RSA · ~2048 bit

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: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.doubble.dk	nl7TGXiRSJxuvnAsDVMrSm9nxoW-rlPAaeUfn5gGpBY
TXT	_acme-challenge.doubble.dk	odI279WGLen0Fmq1XqgirPcwY2LK-1504TSn_bxpqsE

🔗 TLSA / DANE#

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

🔐 DNSSEC#

115ms

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	2415559254
Primary NS (MNAME)	ariella.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-11 09:12:56

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2021-06-01
Expires	2027-06-30 (256d)

📋 WHOIS#

⏱️ Lookup Timing#

42ms

53ms

47ms

AAAA

60ms

TXT

178ms

CAA

48ms

HTTPS

57ms

TLSA

84ms

SOA

0ms

MTA-STS

59ms

DNSSEC

115ms

SRV

62ms

Total

898ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 05:51:55	1377ms	2 NS 3 A 5 MX	🔓 Insecure
2026-09-25 13:53:45	1518ms	2 NS 3 A 5 MX	🔓 Insecure
2026-09-24 21:16:21	1579ms	2 NS 3 A 5 MX	🔓 Insecure
2026-09-23 20:33:40 shown	898ms	2 NS 3 A 5 MX	🔓 Insecure
2026-09-08 17:08:00	1576ms	2 NS 3 A 5 MX	🔓 Insecure
2026-08-28 09:20:29	1234ms	2 NS 3 A 5 MX	🔓 Insecure
2026-08-27 09:49:34	1016ms	2 NS 3 A 5 MX	🔓 Insecure
2026-07-25 09:52:23	9621ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-13 07:28:18	1437ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-25 13:04:49	1618ms	2 NS 3 A 5 MX	🔓 Insecure
2026-06-19 20:39:46	3910ms	2 NS 3 A 5 MX	🔓 Insecure
2026-06-17 04:21:15	685ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-17 04:20:25	650ms	2 NS 3 A 5 MX	🔓 Insecure