how.dk

📜 Historical scan 2026-08-27 05:01:14  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

how.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 7 January 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 89.239.196.34 is hosted by FIBIA P/S (AS44869) in Denmark. Mail is handled by mail1.how.dk. 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#

2 records   42ms
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   83ms
IPTTLPTRASNISP / OrgCIDRCountryCity
89.239.196.34 600s mail1.how.dk AS44869 FIBIA P/S 89.239.192.0/18 🇩🇰 Denmark Odense

📧 MX Records#

1 records   70ms
PriorityTTLMail ServerIP addressesPTRASN
10 600s mail1.how.dk 89.239.196.34 mail1.how.dk AS44869 FIBIA P/S

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscoverhow.dk → 89.239.196.34
🔶 Autoconfighow.dk → 89.239.196.34

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records   255ms
TXT Record
google-site-verification=Bgc4jqQRKMm6MFfT3kZGV1g_BXa9mWgkICMU4pyYZyc
v=spf1 mx ~all

✉️ SPF#

PolicyRecord (how.dk)
~all (soft fail) v=spf1 mx ~all

📨 DMARC#

PolicyRecord (_dmarc.how.dk)
p=reject v=DMARC1;p=reject;rua=mailto:dmarc.rua@how.dk;ruf=mailto:dmarc.ruf@how.dk;fo=1;rf=afrf;pct=100

📬 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 2026-10-09 13:38:39
www CNAMEhow.dk (all on how.dk)
www vs bare domainSame network
WildcardYes: any name under the zone resolves
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔏 ACME Challenge#

TypeNameValue
CNAME _acme-challenge.how.dk how.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

151ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

0ms
FieldValue
Serial2026082401
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s

📋 Registration#

WHOIS fetched 2026-10-17 15:08:47
FieldValue
RegistrarONE.COM A/S
Registered1997-01-07
Expires2027-06-30 (255d)

🔗 Same registrant#

2 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).

DomainRegistrar
2onsdag.dkPunktum dk A/S (direct)
fadso.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
42ms
A
83ms
MX
70ms
AAAA
73ms
TXT
255ms
CAA
86ms
HTTPS
76ms
TLSA
71ms
SOA
0ms
MTA-STS
173ms
DNSSEC
151ms
SRV
94ms
Total
804ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-09 13:38:39 869ms 2 NS 1 A 1 MX 🔒 Secure
2026-10-02 05:25:55 772ms 2 NS 1 A 1 MX 🔒 Secure
2026-09-30 04:51:21 720ms 2 NS 1 A 1 MX 🔒 Secure
2026-09-25 08:42:44 1381ms 2 NS 1 A 1 MX 🔒 Secure
2026-08-28 07:56:40 2785ms 2 NS 1 A 1 MX 🔒 Secure
2026-08-27 05:01:14 shown 804ms 2 NS 1 A 1 MX 🔒 Secure
2026-08-25 19:33:00 674ms 2 NS 1 A 1 MX 🔒 Secure
2026-07-25 07:23:54 992ms 2 NS 1 A 1 MX 🔒 Secure
2026-06-25 06:44:11 777ms 2 NS 1 A 1 MX 🔒 Secure
2026-06-25 03:48:02 1151ms 2 NS 1 A 1 MX 🔒 Secure
2026-06-17 13:25:45 2686ms 2 NS 1 A 1 MX 🔒 Secure
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