extensa.dk

📜 Historical scan 2026-08-06 17:52:42 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

extensa.dk is a .dk domain served by 2 nameservers (noor.ns.cloudflare.com, yadiel.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.26.4.52 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.bradwell.nl. 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 113ms

Nameserver	IP addresses	PTR	ASN / ISP
noor.ns.cloudflare.com	108.162.194.74 162.159.38.74 172.64.34.74 2606:4700:50::a29f:264a 2803:f800:50::6ca2:c24a 2a06:98c1:50::ac40:224a	noor.ns.cloudflare.com noor.ns.cloudflare.com noor.ns.cloudflare.com noor.ns.cloudflare.com noor.ns.cloudflare.com noor.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
yadiel.ns.cloudflare.com	108.162.195.4 162.159.44.4 172.64.35.4 2606:4700:58::a29f:2c04 2803:f800:50::6ca2:c304 2a06:98c1:50::ac40:2304	yadiel.ns.cloudflare.com yadiel.ns.cloudflare.com yadiel.ns.cloudflare.com yadiel.ns.cloudflare.com yadiel.ns.cloudflare.com yadiel.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 115ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.26.4.52	300s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
104.26.5.52	300s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
172.67.75.209	300s	—	AS13335	Cloudflare, Inc.	172.67.64.0/18	—	—

📧 MX Records#

1 records 96ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	mail.bradwell.nl	74.63.240.58	mail.bradwell.nl	AS46475 Limestone Networks, Inc.

🔷 AAAA Records (IPv6)#

3 records 115ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:20::681a:434	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::681a:534	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::ac43:4bd1	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—

🔐 HTTPS Records#

1 records 133ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.26.4.52,104.26.5.52,172.67.75.209 ipv6hint=2606:4700:20::681a:434,2606:4700:20::681a:534,2606:4700:20::ac43:4bd1

📝 TXT Records#

1 records 253ms

TXT Record
v=spf1 ip4:64.31.1.98 ip4:95.168.186.193 ip4:95.168.190.151 ip4:95.154.201.97 ip4:95.154.201.238 ip4:74.63.240.58 +a +mx ~all

✉️ SPF#

Policy	Record (extensa.dk)
~all (soft fail)	v=spf1 ip4:64.31.1.98 ip4:95.168.186.193 ip4:95.168.190.151 ip4:95.154.201.97 ip4:95.154.201.238 ip4:74.63.240.58 +a +mx ~all

📨 DMARC#

Policy	Record (_dmarc.extensa.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@bradwell.nl; 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 01:25:18

www	104.26.4.52 104.26.5.52 172.67.75.209 2606:4700:20::681a:434 2606:4700:20::681a:534 2606:4700:20::ac43:4bd1 (AS13335) (address records, no CNAME)
www vs bare domain	Same network extensa.dk: 104.26.4.52 104.26.5.52 172.67.75.209 2606:4700:20::681a:434 (AS13335) www.extensa.dk: 104.26.4.52 104.26.5.52 172.67.75.209 2606:4700:20::681a:434 (AS13335)
Wildcard	No
BIMI	v=BIMI1; l=https://extensa.dk/media/bimi/extensa-bimi.svg; a=;

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	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: 2/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.extensa.dk	QvLlaLtq8uJPPvkSxOdC-o-bnl_EurKDLIyvEvu3EzE

🔗 TLSA / DANE#

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

🔐 DNSSEC#

181ms

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	2411505788
Primary NS (MNAME)	noor.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

113ms

115ms

96ms

AAAA

115ms

TXT

253ms

CAA

114ms

HTTPS

133ms

TLSA

2946ms

SOA

0ms

MTA-STS

131ms

DNSSEC

181ms

SRV

134ms

Total

4518ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 07:33:20	5105ms	2 NS 3 A 1 MX	🔓 Insecure
2026-09-29 15:47:44	4876ms	2 NS 3 A 1 MX	🔓 Insecure
2026-09-24 08:48:25	12182ms	2 NS 3 A 1 MX	🔓 Insecure
2026-09-23 18:27:31	2735ms	2 NS 3 A 1 MX	🔓 Insecure
2026-09-04 04:49:40	3598ms	2 NS 3 A 1 MX	🔓 Insecure
2026-09-03 08:53:06	4448ms	2 NS 3 A 1 MX	🔓 Insecure
2026-08-31 23:52:33	5485ms	2 NS 3 A 1 MX	🔓 Insecure
2026-08-31 16:27:46	4929ms	2 NS 3 A 1 MX	🔓 Insecure
2026-08-28 18:56:40	5923ms	2 NS 3 A 1 MX	🔓 Insecure
2026-08-26 15:21:01	3246ms	2 NS 3 A 1 MX	🔓 Insecure
2026-08-06 17:52:42 shown	4518ms	2 NS 3 A 1 MX	🔓 Insecure
2026-06-19 22:04:09	3091ms	2 NS 3 A 1 MX	🔓 Insecure
2026-06-17 09:09:51	5925ms	2 NS 3 A 1 MX	🔓 Insecure