doubble.dk

📜 Historical scan 2026-06-25 13:04:49 · ← 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 37ms

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 36ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.26.4.116	600s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
104.26.5.116	600s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
172.67.69.181	600s	—	AS13335	Cloudflare, Inc.	172.67.64.0/18	—	—

📧 MX Records#

5 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	600s	aspmx.l.google.com	2a00:1450:4025:c03::1b 64.233.161.26	rc-in-f27.1e100.net lh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	600s	alt1.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
5	600s	alt2.aspmx.l.google.com	108.177.125.27 2404:6800:4003:c26::1b	tp-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	600s	alt3.aspmx.l.google.com	192.178.230.26 2404:6800:400b:c01b::1b	yunrtab-in-f26.1e100.net yunrtab-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	600s	alt4.aspmx.l.google.com	173.194.43.27 2607:f8b0:400e:c1e::1b	yudlsqd-in-f27.1e100.net yudlsqd-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

3 records 35ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:20::681a:474	600s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::681a:574	600s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::ac43:45b5	600s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—

🔐 HTTPS Records#

1 records 58ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=188.114.96.1,188.114.97.1 ech=AEX+DQBBeQAgACCc057jHmdUNLe3Q7CP6vEMJf27rqKyIa9ycfkg+crjGAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2a06:98c1:3120::1,2a06:98c1:3121::1

📝 TXT Records#

4 records 182ms

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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

81ms

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

🏷️ SOA#

57ms

Field	Value
Serial	2403963393
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#

37ms

36ms

35ms

AAAA

35ms

TXT

182ms

CAA

70ms

HTTPS

58ms

TLSA

101ms

SOA

57ms

MTA-STS

39ms

DNSSEC

81ms

SRV

87ms

Total

1618ms

🕐 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	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 shown	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