extremenerd.dk

📜 Historical scan 2026-08-27 13:33:22 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

extremenerd.dk is a .dk domain served by 2 nameservers (langston.ns.cloudflare.com, surina.ns.cloudflare.com). It was registered on 1 February 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.61.91.40 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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 63ms

Nameserver	IP addresses	PTR	ASN / ISP
langston.ns.cloudflare.com	108.162.195.252 162.159.44.252 172.64.35.252 2606:4700:58::a29f:2cfc 2803:f800:50::6ca2:c3fc 2a06:98c1:50::ac40:23fc	langston.ns.cloudflare.com langston.ns.cloudflare.com langston.ns.cloudflare.com langston.ns.cloudflare.com langston.ns.cloudflare.com langston.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
surina.ns.cloudflare.com	108.162.194.19 162.159.38.19 172.64.34.19 2606:4700:50::a29f:2613 2803:f800:50::6ca2:c213 2a06:98c1:50::ac40:2213	surina.ns.cloudflare.com surina.ns.cloudflare.com surina.ns.cloudflare.com surina.ns.cloudflare.com surina.ns.cloudflare.com surina.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

1 records 78ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
87.61.91.40	300s	0x573d5b28.static.cust.fastspeed.dk	AS3292	TDC Holding A/S	87.61.0.0/17	🇩🇰 Denmark	Silkeborg

📧 MX Records#

2 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.protonmail.ch	176.119.200.128 185.205.70.128 185.70.42.128	mail.protonmail.ch mail.protonmail.ch mail.protonmail.ch	AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG
20	300s	mailsec.protonmail.ch	176.119.200.129 185.205.70.129 185.70.42.129	mailsec.protonmail.ch mailsec.protonmail.ch mailsec.protonmail.ch	AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 289ms

TXT Record
protonmail-verification=ed52f49a78e6d4acc4e4d0ede1d41a051bad1a73
v=spf1 include:_spf.protonmail.ch ~all

✉️ SPF#

Policy	Record (extremenerd.dk)
~all (soft fail)	v=spf1 include:_spf.protonmail.ch ~all

📨 DMARC#

Policy	Record (_dmarc.extremenerd.dk)
p=quarantine	v=DMARC1; p=quarantine

📬 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 2026-10-09 22:08:56

www	NXDOMAIN
www vs bare domain	www does not resolve extremenerd.dk: 87.61.91.40 (AS3292) www.extremenerd.dk: no address (all like this)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.extremenerd.dk	FM7YVyfW7nfzbqNUHOnRXE-CzmjHFFEHjddIb0WLpfM
TXT	_acme-challenge.extremenerd.dk	GebCmi0VcvEvz5qdh-mugBBulkXRTgemACSkksS_3AU
TXT	_acme-challenge.extremenerd.dk	LpoSQcMGo8bHkrCa2CoRPHg7hFvkYd2iT9zIDkPAAVw

🔗 TLSA / DANE#

4 records 93ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mail.protonmail.ch	DANE-EE · SPKI · SHA-256	6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mail.protonmail.ch	DANE-EE · SPKI · SHA-256	76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mailsec.protonmail.ch	DANE-EE · SPKI · SHA-256	76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mailsec.protonmail.ch	DANE-EE · SPKI · SHA-256	6111A5698D23C89E09C36FF833C1487E…

🔐 DNSSEC#

9086ms

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	2413279993
Primary NS (MNAME)	langston.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-09 13:45:38

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2002-02-01
Expires	2027-03-31 (163d)

📋 WHOIS#

⏱️ Lookup Timing#

63ms

78ms

36ms

AAAA

62ms

TXT

289ms

CAA

40ms

HTTPS

63ms

TLSA

93ms

SOA

0ms

MTA-STS

73ms

DNSSEC

9086ms

SRV

107ms

Total

9848ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 18:31:15	912ms	2 NS 1 A 2 MX	🔓 Insecure
2026-09-26 04:02:26	1237ms	2 NS 1 A 2 MX	🔓 Insecure
2026-08-28 23:51:22	1424ms	2 NS 1 A 2 MX	🔓 Insecure
2026-08-27 13:33:22 shown	9848ms	2 NS 1 A 2 MX	🔓 Insecure
2026-08-26 16:40:31	2234ms	2 NS 1 A 2 MX	🔓 Insecure
2026-08-23 03:44:50	11018ms	2 NS 1 A 2 MX	🔓 Insecure
2026-06-27 07:58:03	1746ms	2 NS 1 A 2 MX	🔓 Insecure
2026-06-20 12:43:09	788ms	2 NS 1 A 2 MX	🔓 Insecure
2026-06-17 09:10:04	2100ms	2 NS 1 A 2 MX	🔓 Insecure