yulsn.dk

📜 Historical scan 2026-06-26 20:24:23 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

yulsn.dk is a .dk domain served by 4 nameservers (pns41.cloudns.net, pns42.cloudns.net, pns43.cloudns.net and 1 more). It was registered on 21 February 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.50.64.6 is hosted by Microsoft Corporation (AS8075) in Ireland. Mail is handled by yulsn-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no 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#

4 records 303ms

Nameserver	IP addresses	PTR	ASN / ISP
pns41.cloudns.net	185.136.96.79 2a06:fb00:1::1:79	pns41.cloudns.net pns41.cloudns.net	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
pns42.cloudns.net	185.136.97.79 2a06:fb00:1::2:79	pns42.cloudns.net pns42.cloudns.net	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
pns43.cloudns.net	185.136.98.79 2a06:fb00:1::3:79	pns43.cloudns.net pns43.cloudns.net	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
pns44.cloudns.net	185.136.99.79 2a06:fb00:1::4:79	pns44.cloudns.net pns44.cloudns.net	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd

🌍 A Records#

1 records 301ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.50.64.6	3600s	—	AS8075	Microsoft Corporation	20.48.0.0/12	🇮🇪 Ireland	Dublin

📧 MX Records#

1 records 313ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	yulsn-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca09::1 2a01:111:f403:ca09::3 2a01:111:f403:ca09::d 52.101.68.39 52.101.73.1 52.101.73.16 52.101.73.19	mail-db4pr02cu00307.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-as8pr04cu00803.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	autodiscover.outlook.com → 40.104.116.8

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 574ms

TXT Record
v=DMARC1; p=reject; rua=mailto:rua@yulsn.eu;
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (yulsn.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -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 11:09:59

www CNAME	yulsnwebsite.azurewebsites.net (all on azurewebsites.net) → 20.50.64.6 (AS8075)
www vs bare domain	Same network yulsn.dk: 20.50.64.6 (AS8075) www.yulsn.dk: 20.50.64.6 (AS8075)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt · opt-out RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

465ms

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

🏷️ SOA#

333ms

Field	Value
Serial	2026061301
Primary NS (MNAME)	ns41.cloudns.net
Responsible (RNAME)	hostmaster@yulsn.com
Refresh	7200s
Retry	1800s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-12 11:20:13

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2019-02-21
Expires	2027-02-28 (132d)

🔗 Same registrant#

6 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
dsmail.dk	Punktum dk A/S (direct)
emailstrategi.dk	Punktum dk A/S (direct)
jcard.dk	Punktum dk A/S (direct)
juhlsens.dk	Punktum dk A/S (direct)
loyaltii.dk	Punktum dk A/S (direct)
netjul.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

303ms

301ms

313ms

AAAA

210ms

TXT

574ms

CAA

219ms

HTTPS

264ms

TLSA

761ms

SOA

333ms

MTA-STS

291ms

DNSSEC

465ms

SRV

409ms

Total

4468ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 11:09:59	1242ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-27 03:26:27	1390ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-22 18:02:34	5821ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-06 15:31:06	6019ms	4 NS 1 A 1 MX	🔒 Secure
2026-08-14 10:06:21	15456ms	4 NS 1 A 1 MX	🔒 Secure
2026-07-23 20:02:25	6630ms	4 NS 1 A 1 MX	🔒 Secure
2026-07-04 09:50:37	6281ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-26 20:24:23 shown	4468ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-23 22:02:37	1045ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 00:32:01	949ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-18 07:20:56	3311ms	4 NS 1 A 1 MX	🔒 Secure