how2clean.dk

Records from scan: 2026-09-18 07:50:01 · 1287ms total · last checked 2026-10-17 02:37 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

how2clean.dk is a .dk domain served by 2 nameservers (ns1.123hotel.dk, ns2.123hotel.dk). It was registered on 29 October 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.41.65.179 is hosted by SuperHosting.BG Ltd. (AS49699) in Bulgaria. Mail is handled by how2clean-dk.mail.protection.outlook.com, mail.how2clean.dk and 1 more. The zone is DNSSEC-signed and validates, has no 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 39ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.123hotel.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.123hotel.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 34ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.41.65.179	3600s	mail.style-it.dk	AS49699	SuperHosting.BG Ltd.	193.41.64.0/22	🇧🇬 Bulgaria	—

📧 MX Records#

3 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	how2clean-dk.mail.protection.outlook.com	—	—	—
10	3600s	mail.how2clean.dk	152.53.117.141	admin.style-it.dk	AS197540 netcup GmbH
100	3600s	backup-mx.zitcom.dk	46.36.212.34 46.36.212.36 46.36.212.37 46.36.212.38 89.188.78.64 89.188.78.65 89.188.78.66 94.231.106.12	node4.spamfilter.io node8.spamfilter.io node6.spamfilter.io node7.spamfilter.io node3.spamfilter.io node9.spamfilter.io node10.spamfilter.io node2.spamfilter.io	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

📧 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#

2 records 110ms

Service	Priority	Weight	Port	Target
_sip._tcp	100	1	443	sipdir.online.lync.com
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 132ms

TXT Record
MS=ms10812660
v=spf1 mx a ptr ip4:193.41.65.179 a:mail.style-it.dk a:dexter.icnhost.net a:mail1.123hotel.dk a:how2clean.dk include:mail.style-it.dk include:dexter.icnhost.net include:mail1.123hotel.dk include:spf.protection.outlook.com ~all

✉️ SPF#

Policy	Record (how2clean.dk)
~all (soft fail)	v=spf1 mx a ptr ip4:193.41.65.179 a:mail.style-it.dk a:dexter.icnhost.net a:mail1.123hotel.dk a:how2clean.dk include:mail.style-it.dk include:dexter.icnhost.net include:mail1.123hotel.dk include:spf.protection.outlook.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

🧩 Web & zone#

checked 2026-10-02 06:18:18

www	Address record (no CNAME)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 11/10 · policy: ~all

warn "ptr" is slow, unreliable and discouraged (RFC 7208 §5.5)
error include:mail.style-it.dk has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)
error include:dexter.icnhost.net has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)
error include:mail1.123hotel.dk has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)
error 11 DNS lookups: the limit is 10, so a receiver whose evaluation gets past the 10th returns permerror (SPF fails)
error 3 void lookups (names with no DNS answer): the limit is 2 (RFC 7208 §4.6.4)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

74ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2021111801
Primary NS (MNAME)	ns1.123hotel.dk
Responsible (RNAME)	hostmaster@123hotel.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-09 13:07:50

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2003-10-29
Expires	2026-10-31 (13d)

📋 WHOIS#

⏱️ Lookup Timing#

39ms

34ms

40ms

AAAA

33ms

TXT

132ms

CAA

30ms

HTTPS

34ms

TLSA

638ms

SOA

0ms

MTA-STS

59ms

DNSSEC

74ms

SRV

110ms

Total

1287ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-18 07:50:01 shown	1287ms	2 NS 1 A 3 MX	🔒 Secure
2026-08-28 02:39:46	1371ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-19 23:09:46	2240ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-17 13:32:45	820ms	2 NS 1 A 3 MX	🔒 Secure