dualstack.dk

📜 Historical scan 2026-06-17 04:55:20 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

dualstack.dk is a .dk domain served by 2 nameservers (coleman.ns.cloudflare.com, fay.ns.cloudflare.com). It was registered on 10 November 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. We saw it become registrar-handled on 11 October 2026, when it moved from direct registration at Punktum to dns.services ApS. Its website address 104.21.3.146 is hosted by Cloudflare, Inc. (AS13335). The zone is DNSSEC-signed and validates, has no 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 29ms

Nameserver	IP addresses	PTR	ASN / ISP
coleman.ns.cloudflare.com	—	—	—
fay.ns.cloudflare.com	—	—	—

🌍 A Records#

2 records 29ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.3.146	—	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.130.211	—	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 35ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:392	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:82d3	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 28ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.3.146,172.67.130.211 ech=AEX+DQBBTgAgACBkv//ZxP4Vaum9fERkUVoG+f/WeY8RgzuorCx9S5g9PgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:392,2606:4700:3034::ac43:82d3

📝 TXT Records#

2 records 116ms

TXT Record
v=DMARC1; p=reject;
v=spf1 -all

✉️ SPF#

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

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-12 21:45:17

www CNAME	dualstack.dk (all on dualstack.dk) → 86.52.119.142 2a13:8a02:7001:4766::affe (AS39642 AS213320)
www vs bare domain	Same network dualstack.dk: 86.52.119.142 2a13:8a02:7001:4766::affe (AS39642 AS213320) www.dualstack.dk: 86.52.119.142 2a13:8a02:7001:4766::affe (AS39642 AS213320)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

115ms

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

🏷️ SOA#

28ms

Field	Value
Serial	2407017934
Primary NS (MNAME)	coleman.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 20:50:56

Field	Value
Registrar	dns.services ApS
Registered	2010-11-10
Expires	2026-11-30 (44d)

🔗 Same registrant#

2 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
blacknote.dk	dns.services ApS
kippers.dk	dns.services ApS

📋 WHOIS#

⏱️ Lookup Timing#

29ms

30ms

AAAA

35ms

TXT

116ms

CAA

31ms

HTTPS

28ms

TLSA

96ms

SOA

28ms

MTA-STS

35ms

DNSSEC

115ms

SRV

0ms

Total

446ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 21:45:17	3611ms	5 NS 1 A 0 MX	🔒 Secure
2026-10-11 20:38:38	856ms	5 NS 1 A 0 MX	🔓 Insecure
2026-10-09 19:41:46	433ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-30 13:57:57	521ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-30 02:49:03	518ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-26 18:25:24	568ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-23 13:18:13	665ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-15 14:11:09	630ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-01 03:29:21	1123ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-27 11:08:02	525ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-11 04:53:46	2848ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-04 00:40:39	1350ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-24 06:49:03	3542ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-16 02:39:26	1173ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-26 11:02:54	1018ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-25 18:22:14	819ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-25 15:14:19	911ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-17 04:55:20 shown	446ms	2 NS 2 A 0 MX	🔒 Secure