d-u.dk DNS records

🖥️ Nameservers3 records 25ms

Nameserver	IP addresses	PTR	ASN / ISP
ns4.hostonline.dk	217.195.185.243 2a02:188:6004:14::10	ns4.hostonline.dk ns4.hostonline.dk	AS31027 GlobalConnect A/S AS31027 GlobalConnect A/S
ns5.hostonline.dk	217.195.185.244 2a02:188:6004:14::11	ns5.hostonline.dk ns5.hostonline.dk	AS31027 GlobalConnect A/S AS31027 GlobalConnect A/S
ns6.hostonline.dk	85.191.126.85	ns6.hostonline.dk	AS204274 AURA Fiber A/S

🌍 A Records1 records 20ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
80.63.220.214	60s	214.220.63.80.customer.static.mhhosting.dk	AS3292	TDC Holding A/S	80.62.0.0/15	🇩🇰 Denmark	Ejby

📧 MX Records1 records 25ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	du-dk0c.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca09::20 2a01:111:f403:ca09::8 2a01:111:f403:ca48::8 52.101.68.10 52.101.68.25 52.101.73.11 52.101.73.8	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am0pr04cu00500.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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 98ms

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

📝 TXT Records3 records 89ms

TXT Record
'v=DMARC1; p=none'
MS=ms62272706
v=spf1 include:_spf.hostonline.dk include:spf.protection.outlook.com include:spf.mandrillapp.com -all

✉️ SPF

Policy	Record (d-u.dk)
-all (hard fail)	v=spf1 include:_spf.hostonline.dk include:spf.protection.outlook.com include:spf.mandrillapp.com -all

📨 DMARC

Policy	Record (_dmarc.d-u.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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

🔗 TLSA / DANE

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

🔐 DNSSEC96ms

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

🏷️ SOA0ms

Field	Value
Serial	2026083002
Primary NS (MNAME)	ns4.hostonline.dk
Responsible (RNAME)	hostmaster@hostonline.dk
Refresh	86400s
Retry	7200s
Expire	3600000s
Minimum (neg-cache TTL)	172800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

25ms

A

20ms

MX

25ms

AAAA

26ms

TXT

89ms

CAA

20ms

HTTPS

19ms

TLSA

586ms

SOA

0ms

MTA-STS

33ms

DNSSEC

96ms

SRV

98ms

Total

1230ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 23:12:18	1230ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 12:51:31	1344ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-20 13:40:21	1491ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-15 15:18:49	6035ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-10 17:03:47	3740ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-06 18:19:19	1343ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-03 04:12:32	1337ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-27 02:17:22	9074ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-21 14:02:00	17944ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-18 00:23:24	2834ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-11 06:06:12	1613ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-06 09:09:14	1709ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-02 20:28:57	5094ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-27 19:21:42	2170ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-26 22:29:00	1199ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 10:16:35	5079ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 23:37:57	1836ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 23:31:14	741ms	3 NS 1 A 1 MX	🔒 Secure	View