sdt.dk DNS records

🖥️ Nameservers5 records 27ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.gigahost.dk	46.183.139.31	ns1.gigahost.dk	AS47292 Sentia Denmark A/S
ns2.gigahost.dk	46.183.139.222	web22.gigahost.dk	AS47292 Sentia Denmark A/S
ns3.gigahost.dk	71.19.249.71	ns3.gigahost.dk	AS11831 eSecureData
ns4.gigahost.dk	51.79.215.130	ns4.gigahost.dk	AS16276 OVH SAS
ns5.gigahost.dk	77.74.192.83	ns5.gigahost.dk	AS42831 UK Dedicated Servers Limited

🌍 A Records1 records 50ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.183.138.100	3600s	—	AS47292	Sentia Denmark A/S	46.183.138.0/23	🇩🇰 Denmark	—

📧 MX Records1 records 172ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	sdt-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca04::c 2a01:111:f403:ca09::f 2a01:111:f403:ca48::c 52.101.103.143 52.101.181.153 52.101.68.25 52.101.68.32	mail-db7pr03cu00601.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db3pr0202cu00200.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	sdt.dk → 46.183.138.100

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records5 records 185ms

TXT Record
MS=ms15412970
selector1-sdt-dk._domainkey.sdtdk.n-v1.dkim.mail.microsoft
selector2-sdt-dk._domainkey.sdtdk.n-v1.dkim.mail.microsoft
spf2.0/pra
v=spf1 include:spf.gigahost.dk include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (sdt.dk)
-all (hard fail)	v=spf1 include:spf.gigahost.dk include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.sdt.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@gigahost.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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.sdt.dk	sdt.dk

🔗 TLSA / DANE

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

🔐 DNSSEC206ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082701
Primary NS (MNAME)	ns1.gigahost.dk
Responsible (RNAME)	hostmaster@sdt.dk
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

27ms

A

50ms

MX

172ms

AAAA

44ms

TXT

185ms

CAA

27ms

HTTPS

47ms

TLSA

862ms

SOA

0ms

MTA-STS

51ms

DNSSEC

206ms

SRV

366ms

Total

1718ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 09:12:17	1718ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-08-20 21:37:18	2327ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-08-13 16:21:45	2731ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-08-08 02:29:58	11191ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-08-03 07:44:12	1797ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-07-23 03:45:17	1935ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-07-17 03:17:26	1936ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-07-09 03:46:13	11408ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-07-02 13:50:56	1335ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-06-26 09:28:02	4175ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-06-22 23:16:22	1099ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 12:46:20	1178ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-18 00:10:56	1650ms	5 NS 1 A 1 MX	🔓 Insecure	View