data4u.dk DNS records

🖥️ Nameservers2 records 48ms

Nameserver	IP addresses	PTR	ASN / 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 Records1 records 50ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
191.235.208.12	43200s	—	AS8075	Microsoft Corporation	191.232.0.0/13	🇮🇪 Ireland	Dublin

📧 MX Records3 records 69ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	43200s	mx.zoho.com	136.143.183.44 136.143.183.44 136.143.183.44 136.143.183.44 136.143.183.44 136.143.183.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44	mx.zoho.com mx3.zoho.com mx2.zoho.com mx3.zohomail.com mx2.zohomail.com mx.zohomail.com mx3.zoho.com mx6.zoho.com mx7.zoho.com mx8.zoho.com mx2.zoho.com mx.zoho.com mx.zohomail.com mx2.zohomail.com mx3.zohomail.com	AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO
20	43200s	mx2.zoho.com	204.141.33.44 204.141.33.44 204.141.33.44 204.141.33.44 204.141.33.44 204.141.33.44 204.141.33.44 204.141.33.44 204.141.33.44	mx3.zoho.com mx.zohomail.com mx2.zohomail.com mx3.zohomail.com mx6.zoho.com mx7.zoho.com mx8.zoho.com mx2.zoho.com mx.zoho.com	AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO
50	43200s	mx3.zoho.com	204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44	mx3.zohomail.com mx2.zohomail.com mx.zohomail.com mx.zoho.com mx3.zoho.com mx2.zoho.com mx8.zoho.com mx7.zoho.com mx6.zoho.com	AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	data4u.azurewebsites.net → 40.112.90.244
🔶 Autoconfig	data4u.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 Records1 records 171ms

TXT Record
v=spf1 mx include:zoho.com ~all

✉️ SPF

Policy	Record (data4u.dk)
~all (soft fail)	v=spf1 mx include:zoho.com ~all

📨 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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.data4u.dk	data4u.azurewebsites.net

🔗 TLSA / DANE

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

🔐 DNSSEC2075ms

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

🏷️ SOA0ms

Field	Value
Serial	2026030601
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

48ms

A

50ms

MX

69ms

AAAA

61ms

TXT

171ms

CAA

43ms

HTTPS

60ms

TLSA

371ms

SOA

0ms

MTA-STS

91ms

DNSSEC

2075ms

SRV

85ms

Total

3075ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 22:27:17	3075ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-26 04:19:33	4377ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-24 01:52:59	1065ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 20:37:50	844ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-17 01:31:06	65535ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-17 01:11:07	2748ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-17 01:07:33	745ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-17 01:01:49	1155ms	2 NS 1 A 3 MX	🔒 Secure	View