d-u.dk

📜 Historical scan 2026-09-15 12:54:51 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

d-u.dk is a .dk domain served by 3 nameservers (ns4.hostonline.dk, ns5.hostonline.dk, ns6.hostonline.dk). It was registered on 11 April 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 80.63.220.214 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by du-dk0c.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#

3 records 55ms

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 Records#

1 records 58ms

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 Records#

1 records 51ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	du-dk0c.mail.protection.outlook.com	2a01:111:f403:ca09::28 2a01:111:f403:ca21::c 2a01:111:f403:ca48::10 2a01:111:f403:ca48::a 52.101.103.140 52.101.68.10 52.101.68.21 52.101.73.145	mail-am6pr02cu00300.inbound.protection.outlook.com mail-matpr04cu00204.inbound.protection.outlook.com mail-miypr05cu00100.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr02cu00204.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-am6pr02cu00301.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 → 40.104.116.40

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 121ms

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

📝 TXT Records#

3 records 316ms

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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-16 18:41:17

www CNAME	d-u.dk (all on d-u.dk) → 80.63.220.214 (AS3292)
www vs bare domain	Same network d-u.dk: 80.63.220.214 (AS3292) www.d-u.dk: 80.63.220.214 (AS3292)
Wildcard	No
Denial of existence	NSEC3 · 10 iterations · 8-byte salt · opt-out RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 6/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

138ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026091402
Primary NS (MNAME)	ns4.hostonline.dk
Responsible (RNAME)	hostmaster@hostonline.dk
Refresh	86400s
Retry	7200s
Expire	3600000s
Minimum (neg-cache TTL)	172800s

📋 Registration#

WHOIS fetched 2026-10-16 19:18:38

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2022-04-11
Expires	2027-04-10 (175d)

🔗 Same registrant#

13 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
boliglejeportal.dk	Punktum dk A/S (direct)
danskeejendomsudlejere.dk	Punktum dk A/S (direct)
danskeudlejere.dk	Punktum dk A/S (direct)
erhvervslejeportal.dk	Punktum dk A/S (direct)
grundejer.dk	Punktum dk A/S (direct)
jydskegrundejerforeninger.dk	Punktum dk A/S (direct)
jyskegrundejerforeninger.dk	Punktum dk A/S (direct)
ledige-hjem.dk	TS COMPUTER ApS
ledigehjem.dk	TS COMPUTER ApS
ledighjem.dk	TS COMPUTER ApS
leje-portal.dk	Punktum dk A/S (direct)
leje-portalen.dk	Punktum dk A/S (direct)
udlejerforening.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

55ms

58ms

51ms

AAAA

50ms

TXT

316ms

CAA

51ms

HTTPS

52ms

TLSA

692ms

SOA

0ms

MTA-STS

65ms

DNSSEC

138ms

SRV

121ms

Total

1594ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 18:41:17	2147ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-14 15:02:16	1824ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-09 07:33:55	1708ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-04 23:04:46	917ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-29 22:47:45	1120ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-24 21:36:59	932ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-22 14:28:17	1479ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-15 12:54:51 shown	1594ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-11 03:43:56	2125ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-04 01:20:19	1438ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-31 23:12:18	1230ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-26 12:51:31	1344ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-20 13:40:21	1491ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-15 15:18:49	6035ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-10 17:03:47	3740ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-06 18:19:19	1343ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-03 04:12:32	1337ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-27 02:17:22	9074ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-21 14:02:00	17944ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-18 00:23:24	2834ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-11 06:06:12	1613ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-06 09:09:14	1709ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-02 20:28:57	5094ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-27 19:21:42	2170ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-26 22:29:00	1199ms	3 NS 1 A 1 MX	🔒 Secure