net4us.dk

Records from scan: 2026-10-10 10:23:07  ·  647ms total  ·  last checked 2026-10-21 05:58 (unchanged)
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

net4us.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 9.205.16.211 is hosted by Microsoft Corporation (AS8075) in Denmark. Mail is handled by odie.holmnet.dk, mail.holmnet.dk. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records   34ms
NameserverIP addressesPTRASN / 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 Records#

1 records   36ms
IPTTLPTRASNISP / OrgCIDRCountryCity
9.205.16.211 600s odie.holmnet.dk AS8075 Microsoft Corporation 9.205.0.0/16 🇩🇰 Denmark Copenhagen

📧 MX Records#

2 records   36ms
PriorityTTLMail ServerIP addressesPTRASN
10 600s odie.holmnet.dk 9.205.16.211 odie.holmnet.dk AS8075 Microsoft Corporation
20 600s mail.holmnet.dk 9.205.16.211 odie.holmnet.dk AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscovernet4us.dk → 9.205.16.211

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records   233ms
TXT Record
google-site-verification=JwFwgj0J0h_buqOJ9pYizY0_3FPUJW2-yQqZpvgv5c0
v=spf1 mx include:holmnet.dk ~all

✉️ SPF#

PolicyRecord (net4us.dk)
~all (soft fail) v=spf1 mx include:holmnet.dk ~all

📨 DMARC#

PolicyRecord (_dmarc.net4us.dk)
p=quarantine v=DMARC1; p=quarantine; rua=mailto:peter@net4us.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

🧩 Web & zone#

checked 2026-10-10 10:23:07
www CNAMEodie.holmnet.dk (all on holmnet.dk)
www vs bare domainSame network
net4us.dk: 9.205.16.211 (AS8075)
www.net4us.dk: 9.205.16.211 (AS8075)
WildcardNo
Denial of existenceNSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found
SelectorCNAMEKey
mail — RSA · ~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: 4/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

57ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

51ms
FieldValue
Serial2026100901
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup
📋 WHOIS#

⏱️ Lookup Timing#

NS
34ms
A
36ms
MX
36ms
AAAA
34ms
TXT
233ms
CAA
33ms
HTTPS
34ms
TLSA
115ms
SOA
51ms
MTA-STS
44ms
DNSSEC
57ms
SRV
54ms
Total
647ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-10 10:23:07 shown 647ms 2 NS 1 A 2 MX 🔒 Secure
2026-10-09 09:58:46 850ms 2 NS 1 A 2 MX 🔒 Secure
2026-09-13 08:06:09 1105ms 2 NS 1 A 2 MX 🔒 Secure
2026-08-10 22:47:55 719ms 2 NS 1 A 2 MX 🔒 Secure
2026-08-07 08:19:07 1617ms 2 NS 1 A 2 MX 🔒 Secure
2026-07-23 00:56:54 8645ms 2 NS 1 A 2 MX 🔒 Secure
2026-07-20 22:36:54 791ms 2 NS 1 A 2 MX 🔒 Secure
2026-07-19 07:35:53 16805ms 2 NS 1 A 2 MX 🔒 Secure
2026-07-17 04:04:18 1049ms 2 NS 1 A 2 MX 🔒 Secure
2026-07-12 09:07:13 972ms 2 NS 1 A 2 MX 🔒 Secure
2026-06-22 18:35:19 1225ms 2 NS 1 A 2 MX 🔒 Secure
2026-06-17 20:33:48 908ms 2 NS 1 A 2 MX 🔒 Secure
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