dsbfirst.dk

📜 Historical scan 2026-08-25 21:01:41 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

dsbfirst.dk is a .dk domain served by 2 nameservers (dns.dsb.dk, ns.dsb.dk). It was registered on 29 November 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.28.147.158 is hosted by DSB (SOV) (AS41746) in Denmark. The zone is not DNSSEC-signed, publishes a 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#

2 records 57ms

Nameserver	IP addresses	PTR	ASN / ISP
dns.dsb.dk	193.28.147.132	dns.dsb.dk	AS41746 DSB (SOV)
ns.dsb.dk	193.28.147.131	ns.dsb.dk	AS41746 DSB (SOV)

🌍 A Records#

1 records 62ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.28.147.158	300s	www.dsb.dk	AS41746	DSB (SOV)	193.28.147.0/24	🇩🇰 Denmark	Kongens Lyngby

📧 MX Records#

📧

No MX records found

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 107ms

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

📝 TXT Records#

3 records 306ms

TXT Record
2/eF3oQD5uSrKaj+Gwgv4EENmiNd+jaELtbPe7w4PNFJW3ycWE3xXmWU+4uag16VN9uaPHd2c+MX2ekClJ+Ryw==
MS=ms46619066
v=spf1 include:dsb.includes.dsb.dk include:spf.protection.outlook.com include:spf.mph1.com -all

✉️ SPF#

Policy	Record (dsbfirst.dk)
-all (hard fail)	v=spf1 include:dsb.includes.dsb.dk include:spf.protection.outlook.com include:spf.mph1.com -all

📨 DMARC#

Policy	Record (_dmarc.dsbfirst.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:pfutvobx@ag.eu.dmarcadvisor.com; ruf=mailto:pfutvobx@fr.eu.dmarcadvisor.com; fo=1;

📬 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 22:12:56

www CNAME	www.dsb.dk (all on dsb.dk) → 150.171.109.193 2603:1061:14:c1::1 (AS8075)
www vs bare domain	Different networks dsbfirst.dk: 193.28.147.158 (AS41746) www.dsbfirst.dk: 150.171.109.193 2603:1061:14:c1::1 (AS8075) (all like this)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2083ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2024102901
Primary NS (MNAME)	ns.dsb.dk
Responsible (RNAME)	manager@dsb.dk
Refresh	1800s
Retry	600s
Expire	1209600s
Minimum (neg-cache TTL)	5400s

📋 Registration#

WHOIS fetched 2026-10-08 08:06:06

Field	Value
Registrar	Abion AB
Registered	2006-11-29
Expires	2026-11-30 (44d)

📋 WHOIS#

⏱️ Lookup Timing#

57ms

62ms

53ms

AAAA

61ms

TXT

306ms

CAA

82ms

HTTPS

65ms

TLSA

393ms

SOA

0ms

MTA-STS

104ms

DNSSEC

2083ms

SRV

107ms

Total

2813ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-13 03:33:02	9677ms	2 NS 1 A 0 MX	🔓 Insecure
2026-08-27 04:11:34	2808ms	2 NS 1 A 0 MX	🔓 Insecure
2026-08-25 21:01:41 shown	2813ms	2 NS 1 A 0 MX	🔓 Insecure
2026-06-25 11:44:19	7713ms	2 NS 1 A 0 MX	🔓 Insecure
2026-06-24 06:20:34	566ms	2 NS 1 A 0 MX	❓ Unknown
2026-06-22 19:21:45	1136ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 23:13:38	1115ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 04:45:43	537ms	2 NS 1 A 0 MX	🔓 Insecure