principia.dk

📜 Historical scan 2026-09-03 23:34:22 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

principia.dk is a .dk domain served by 2 nameservers (johnny.ns.cloudflare.com, sima.ns.cloudflare.com). It was registered on 18 December 1996 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.10.19 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by principia-dk.mail.protection.outlook.com. 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 32ms

Nameserver	IP addresses	PTR	ASN / ISP
johnny.ns.cloudflare.com	108.162.195.186 162.159.44.186 172.64.35.186 2606:4700:58::a29f:2cba 2803:f800:50::6ca2:c3ba 2a06:98c1:50::ac40:23ba	johnny.ns.cloudflare.com johnny.ns.cloudflare.com johnny.ns.cloudflare.com johnny.ns.cloudflare.com johnny.ns.cloudflare.com johnny.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
sima.ns.cloudflare.com	108.162.192.222 172.64.32.222 173.245.58.222 2606:4700:50::adf5:3ade 2803:f800:50::6ca2:c0de 2a06:98c1:50::ac40:20de	sima.ns.cloudflare.com sima.ns.cloudflare.com sima.ns.cloudflare.com sima.ns.cloudflare.com sima.ns.cloudflare.com sima.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 26ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.10.19	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.162.31	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 28ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	principia-dk.mail.protection.outlook.com	2a01:111:f403:ca09::28 2a01:111:f403:ca09::9 2a01:111:f403:ca09::a 2a01:111:f403:ca3c::a 52.101.185.114 52.101.68.36 52.101.73.19 52.101.73.22	mail-am6pr02cu00300.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-zrxpr07cu00102.inbound.protection.outlook.com mail-zrxpr04cu00102.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	172.67.162.31
🔶 Autoconfig	172.67.162.31

🔷 AAAA Records (IPv6)#

2 records 50ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::6815:a13	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::ac43:a21f	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 27ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.10.19,172.67.162.31 ech=AEX+DQBBlAAgACA3tZJLxbpnq0I1FEVWWR+QjKFBAX1JNhvL648IBHgSYQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:a13,2606:4700:3033::ac43:a21f

🔌 SRV Records#

1 records 66ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 174ms

TXT Record
MS=ms51338895
v=spf1 include:_spf62510.spf-protect.dk -all

✉️ SPF#

Policy	Record (principia.dk)
-all (hard fail)	v=spf1 include:_spf62510.spf-protect.dk -all

📨 DMARC#

Policy	Record (_dmarc.principia.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:6718fc5a06b4e@dmarc-dk.centerasecurity.com;

📬 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 2026-10-15 10:41:08

www	104.21.10.19 172.67.162.31 2606:4700:3032::6815:a13 2606:4700:3033::ac43:a21f (AS13335) (address records, no CNAME)
www vs bare domain	Same network principia.dk: 104.21.10.19 172.67.162.31 2606:4700:3032::6815:a13 2606:4700:3033::ac43:a21f (AS13335) www.principia.dk: 104.21.10.19 172.67.162.31 2606:4700:3032::6815:a13 2606:4700:3033::ac43:a21f (AS13335)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	Delete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-principia-dk._domainkey.hfchristiansen.onmicrosoft.com	RSA · ~1024 bit below 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.principia.dk	fW6KODVBQNSSY4w9Enz6xqCHnvRjGMfAuFFKD2N3YX8
TXT	_acme-challenge.principia.dk	hIKfGQ1-wtd-JLpx2vU72ko0vcxEhPe240FPSIEyACw

🔗 TLSA / DANE#

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

🔐 DNSSEC#

108ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2413846196
Primary NS (MNAME)	johnny.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-23 01:31:45

Field	Value
Registrar	InterNetX GmbH
Registered	1996-12-18
Expires	2026-12-31 (69d)

🔗 Same registrant#

26 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
avenue-bikes.dk	InterNetX GmbH
avenuebikes.dk	InterNetX GmbH
avenuecykler.dk	InterNetX GmbH
bike-by-gubi.dk	InterNetX GmbH
bugatticykler.dk	InterNetX GmbH
centurion.dk	InterNetX GmbH
cyklerforalle.dk	InterNetX GmbH
hf-christiansen.dk	InterNetX GmbH
hfchristiansen.dk	InterNetX GmbH
mbk-bikes.dk	InterNetX GmbH
mbk-cykler.dk	InterNetX GmbH
mbkbikes.dk	InterNetX GmbH
mbkcykler.dk	InterNetX GmbH
micadobikes.dk	InterNetX GmbH
motobecanebikes.dk	InterNetX GmbH
nishiki-bikes.dk	InterNetX GmbH
nishiki-cykler.dk	InterNetX GmbH
nishikibikes.dk	InterNetX GmbH
principia-bikes.dk	InterNetX GmbH
principia-cykler.dk	InterNetX GmbH
principiacykler.dk	InterNetX GmbH
raleigh-bikes.dk	InterNetX GmbH
raleigh-cykler.dk	InterNetX GmbH
raleighbikes.dk	InterNetX GmbH
taarnby-bikes.dk	InterNetX GmbH
tourist-de-lux.dk	InterNetX GmbH

📋 WHOIS#

⏱️ Lookup Timing#

32ms

26ms

28ms

AAAA

50ms

TXT

174ms

CAA

26ms

HTTPS

27ms

TLSA

187ms

SOA

0ms

MTA-STS

67ms

DNSSEC

108ms

SRV

66ms

Total

839ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 10:41:08	2853ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-21 21:51:30	1129ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-20 05:22:55	1440ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-07 22:24:40	1564ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-03 23:34:22 shown	839ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 17:45:23	1412ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-22 16:13:49	2330ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-18 07:55:30	5295ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-06 18:15:29	2055ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-20 03:10:17	1856ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-11 08:45:35	3650ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-22 21:11:54	2869ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-17 23:54:22	1135ms	2 NS 2 A 1 MX	🔒 Secure