yulsn.dk DNS records

🖥️ Nameservers4 records 60ms

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 Records1 records 79ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.50.64.6	3599s	—	AS8075	Microsoft Corporation	20.48.0.0/12	🇮🇪 Ireland	Dublin

📧 MX Records1 records 72ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	yulsn-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca04::9 2a01:111:f403:ca09::6 2a01:111:f403:ca09::c 52.101.68.16 52.101.68.25 52.101.68.5 52.101.73.22	mail-db4pr02cu00307.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-du2pr03cu00105.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	autodiscover.outlook.com → 40.104.116.24

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 227ms

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

🔗 TLSA / DANE

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

🔐 DNSSEC9089ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081201
Primary NS (MNAME)	ns41.cloudns.net
Responsible (RNAME)	hostmaster@yulsn.com
Refresh	7200s
Retry	1800s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

60ms

A

79ms

MX

72ms

AAAA

87ms

TXT

227ms

CAA

60ms

HTTPS

83ms

TLSA

317ms

SOA

0ms

MTA-STS

88ms

DNSSEC

9089ms

SRV

107ms

Total

15456ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-14 10:06:21	15456ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-07-23 20:02:25	6630ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-07-04 09:50:37	6281ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-26 20:24:23	4468ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 22:02:37	1045ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 00:32:01	949ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 07:20:56	3311ms	4 NS 1 A 1 MX	🔒 Secure	View