sleth.dk DNS records

🖥️ Nameservers2 records 237ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records1 records 283ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.140	3600s	webcluster1.webpod14-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 233ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	600s	sleth-dk.mail.protection.outlook.com	2a01:111:f403:ca04::c 2a01:111:f403:ca04::d 2a01:111:f403:ca04::e 2a01:111:f403:ca09::8 52.101.68.0 52.101.68.16 52.101.68.5 52.101.68.8	mail-db9pr02cu00204.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-du0pr03cu00100.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
🔶 Autoconfig	46.30.213.140

🔷 AAAA Records (IPv6)1 records 281ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10c:65:d3d8:8be:d384	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 363ms

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

📝 TXT Records1 records 648ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:_custspf.one.com ip4:217.63.124.14 -all

✉️ SPF

Policy	Record (sleth.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:_custspf.one.com ip4:217.63.124.14 -all

📨 DMARC

Policy	Record (_dmarc.sleth.dk)
p=quarantine	v=DMARC1; p=quarantine; pct=100; ri=43200; rua=mailto:rua-reports@cadesign.dk; ruf=mailto:ruf-reports@cadesign.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

🔗 TLSA / DANE

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

🔐 DNSSEC516ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082102
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

237ms

A

283ms

MX

233ms

AAAA

281ms

TXT

648ms

CAA

305ms

HTTPS

341ms

TLSA

608ms

SOA

0ms

MTA-STS

403ms

DNSSEC

516ms

SRV

363ms

Total

6100ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-22 03:30:24	6100ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-21 03:25:48	1293ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-28 07:11:49	1543ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 15:19:43	847ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 03:11:38	975ms	2 NS 1 A 1 MX	🔒 Secure	View