first.dk

📜 Historical scan 2026-06-27 08:40:54 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

first.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 18 March 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.225.90.75 is hosted by Cortex Consult A/S (AS31709) in Denmark. Mail is handled by first-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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 30ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 30ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.225.90.75	3600s	ns1.cortexconsult.dk ns2.cortexconsult.dk	AS31709	Cortex Consult A/S	195.225.88.0/22	🇩🇰 Denmark	Valby

📧 MX Records#

1 records 18ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	first-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::8 2a01:111:f403:ca04::f 2a01:111:f403:ca09::4 52.101.68.18 52.101.73.2 52.101.73.24 52.101.73.26	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db5pr02cu00100.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-as8pr05cu00300.inbound.protection.outlook.com mail-as9pr05cu01302.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 → 40.104.116.56
🔶 Autoconfig	195.225.90.75

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 37ms

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

📝 TXT Records#

5 records 140ms

TXT Record
gkm5pmww798w24jy9kdkr48wghk3vvk7
google-site-verification=NWYp_f_LPfU9RcgEMAcn6kVxky7d3TgDMhUdwODUy9g
MS=ms11704022
q0hr85nrplsdq2nsn7rprr5qvpwxgkyc
v=spf1 include:spf.protection.outlook.com include:spf.smtp2go.com ip4:185.150.199.46 -all

✉️ SPF#

Policy	Record (first.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.smtp2go.com ip4:185.150.199.46 -all

📨 DMARC#

Policy	Record (_dmarc.first.dk)
p=reject	v=DMARC1; p=reject;rua=mailto:tjmpklk7@ag.eu.dmarcian.com; ruf=mailto:tjmpklk7@fr.eu.dmarcian.com

📬 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 2026-10-11 15:13:24

www	195.225.90.75 (AS31709) (address records, no CNAME)
www vs bare domain	Same network first.dk: 195.225.90.75 (AS31709) www.first.dk: 195.225.90.75 (AS31709)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-first-dk._domainkey.firstmarinedk.onmicrosoft.com	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

57ms

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

🏷️ SOA#

27ms

Field	Value
Serial	2026060901
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-13 22:24:08

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-03-18
Expires	2027-03-31 (163d)

🔗 Same registrant#

5 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
1marine.dk	Punktum dk A/S (direct)
1stmarine.dk	Punktum dk A/S (direct)
afogtillon.dk	ONE.COM A/S
aogtillon.dk	ONE.COM A/S
ledernelon.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

30ms

18ms

AAAA

36ms

TXT

140ms

CAA

27ms

HTTPS

26ms

TLSA

486ms

SOA

27ms

MTA-STS

39ms

DNSSEC

57ms

SRV

37ms

Total

1124ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 18:54:43	1151ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 13:10:06	1730ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 22:32:54	1343ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-20 21:03:26	801ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-05 21:55:20	1276ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-27 02:33:58	1437ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-25 18:39:51	1032ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-21 06:32:35	17624ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-20 06:01:40	2269ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-27 08:40:54 shown	1124ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 17:05:36	1318ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 12:29:08	1185ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 16:11:59	2174ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 03:15:28	1871ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 02:39:47	1093ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-19 19:41:59	704ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 10:13:51	2805ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 10:08:44	1100ms	2 NS 1 A 1 MX	🔒 Secure