tensing.dk

📜 Historical scan 2026-09-23 13:59:34 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tensing.dk is a .dk domain served by 2 nameservers (leia.ns.cloudflare.com, lou.ns.cloudflare.com). It was registered on 30 September 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.68.2 is hosted by Cloudflare, Inc. (AS13335). The zone is DNSSEC-signed and validates, 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 35ms

Nameserver	IP addresses	PTR	ASN / ISP
leia.ns.cloudflare.com	108.162.192.184 172.64.32.184 173.245.58.184 2606:4700:50::adf5:3ab8 2803:f800:50::6ca2:c0b8 2a06:98c1:50::ac40:20b8	leia.ns.cloudflare.com leia.ns.cloudflare.com leia.ns.cloudflare.com leia.ns.cloudflare.com leia.ns.cloudflare.com leia.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
lou.ns.cloudflare.com	108.162.193.199 172.64.33.199 173.245.59.199 2606:4700:58::adf5:3bc7 2803:f800:50::6ca2:c1c7 2a06:98c1:50::ac40:21c7	lou.ns.cloudflare.com lou.ns.cloudflare.com lou.ns.cloudflare.com lou.ns.cloudflare.com lou.ns.cloudflare.com lou.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 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.68.2	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.183.145	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	172.67.183.145
🔶 Autoconfig	172.67.183.145

🔷 AAAA Records (IPv6)#

2 records 35ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::6815:4402	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:b791	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 32ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.68.2,172.67.183.145 ech=AEX+DQBBSwAgACD11o6crS/bLU3TWG3c5Ae/Qe5+Db736R+swrunvTY7YwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:4402,2606:4700:3034::ac43:b791

📝 TXT Records#

1 records 189ms

TXT Record
v=spf1 -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.tensing.dk)
p=reject	v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rua=mailto:a5c5339b7bd841b0b63dc0ed9724ea2e@dmarc-reports.cloudflare.net,mailto:security@kfum-kfuk.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 2026-10-08 02:51:28

www	104.21.68.2 172.67.183.145 2606:4700:3034::6815:4402 2606:4700:3034::ac43:b791 (AS13335) (address records, no CNAME)
www vs bare domain	Same network tensing.dk: 104.21.68.2 172.67.183.145 2606:4700:3034::6815:4402 2606:4700:3034::ac43:b791 (AS13335) www.tensing.dk: 104.21.68.2 172.67.183.145 2606:4700:3034::6815:4402 2606:4700:3034::ac43:b791 (AS13335)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.tensing.dk	71p5BihuA0ghgwjrUb-jCmeaLkmmXmeQi9BlpKrQFuI
TXT	_acme-challenge.tensing.dk	fGAw1DAko62Op4Gpu1q5C4d_3zMyP8yvbkollG_RbEI

🔗 TLSA / DANE#

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

🔐 DNSSEC#

110ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2415560667
Primary NS (MNAME)	leia.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-18 00:19:13

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-09-30
Expires	2027-09-30 (346d)

🔗 Same registrant#

13 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
børnehøjskolerne.dk	Punktum dk A/S (direct)
faellesklang.dk	Punktum dk A/S (direct)
fairhuse.dk	Punktum dk A/S (direct)
familiesangbogen.dk	Punktum dk A/S (direct)
fællesklang.dk	Punktum dk A/S (direct)
kannikekollegiet.dk	Punktum dk A/S (direct)
kfumkfuk.dk	Punktum dk A/S (direct)
kfumogkfuk.dk	Punktum dk A/S (direct)
koldingbørnehøjskole.dk	Punktum dk A/S (direct)
påskeindsamling.dk	Punktum dk A/S (direct)
påskeindsamlingen.dk	Punktum dk A/S (direct)
ymca.dk	Punktum dk A/S (direct)
ywca.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

35ms

41ms

42ms

AAAA

35ms

TXT

189ms

CAA

34ms

HTTPS

32ms

TLSA

69ms

SOA

0ms

MTA-STS

53ms

DNSSEC

110ms

SRV

88ms

Total

627ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 02:51:28	445ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-26 15:02:42	632ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-24 14:41:18	1319ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-23 13:59:34 shown	627ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-16 08:41:11	577ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-08 20:25:33	1652ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-01 14:48:41	1179ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-10 14:22:36	2890ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-25 11:51:02	1958ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-16 10:45:36	1035ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-11 06:46:39	1111ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-27 15:15:55	750ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-17 13:01:20	847ms	2 NS 2 A 0 MX	🔒 Secure