it4u.dk

📜 Historical scan 2026-10-07 18:45:16  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

it4u.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 2 March 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 13.69.228.17 is hosted by Microsoft Corporation (AS8075) in Ireland. Mail is handled by .. The zone is DNSSEC-signed and validates, has no 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   28ms
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   40ms
IPTTLPTRASNISP / OrgCIDRCountryCity
13.69.228.17 43200s — AS8075 Microsoft Corporation 13.64.0.0/11 🇮🇪 Ireland Dublin

📧 MX Records#

1 records   32ms
PriorityTTLMail ServerIP addressesPTRASN
0 300s .  Null MX — domain accepts no email (RFC 7505)

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscoverdata4u.azurewebsites.net → 40.112.90.244
🔶 Autoconfigdata4u.azurewebsites.net → 40.112.90.244

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝
No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-13 03:06:43
www CNAMEdata4u.azurewebsites.net (all on azurewebsites.net)
www vs bare domainSame network
it4u.dk: 13.69.228.17 (AS8075)
www.it4u.dk: 40.112.90.244 (AS8075)
WildcardYes: any name under the zone resolves
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

🔏 ACME Challenge#

TypeNameValue
CNAME _acme-challenge.it4u.dk data4u.azurewebsites.net

🔗 TLSA / DANE#

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

🔐 DNSSEC#

58ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

48ms
FieldValue
Serial2026100701
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s

📋 Registration#

WHOIS fetched 2026-10-07 19:22:29
FieldValue
RegistrarPunktum dk A/S (direct)
Registered1999-03-02
Expires2027-03-31 (163d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
28ms
A
40ms
MX
32ms
AAAA
39ms
TXT
151ms
CAA
36ms
HTTPS
24ms
TLSA
46ms
SOA
48ms
MTA-STS
60ms
DNSSEC
58ms
SRV
62ms
Total
514ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-13 03:06:43 492ms 2 NS 1 A 1 MX 🔒 Secure
2026-10-07 18:45:16 shown 514ms 2 NS 1 A 1 MX 🔒 Secure
2026-09-29 22:20:27 917ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-27 01:32:16 832ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-04 09:43:11 830ms 2 NS 1 A 4 MX 🔒 Secure
2026-08-28 05:44:51 1179ms 2 NS 1 A 4 MX 🔒 Secure
2026-06-23 04:36:46 938ms 2 NS 1 A 4 MX 🔒 Secure
2026-06-17 12:53:35 4391ms 2 NS 1 A 4 MX 🔒 Secure
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