collatz-consulting.dk

📜 Historical scan 2026-10-01 03:55:40  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

collatz-consulting.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 27 September 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.133 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod13-cph3.one.com, mx2.pub.mailpod13-cph3.one.com and 2 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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   57ms
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   57ms
IPTTLPTRASNISP / OrgCIDRCountryCity
77.111.240.133 3600s webcluster6.webpod11-cph3.one.com AS51468 One.com A/S 77.111.240.0/22 🇩🇰 Denmark Copenhagen

📧 MX Records#

4 records   50ms
PriorityTTLMail ServerIP addressesPTRASN
10 10800s mx1.pub.mailpod13-cph3.one.com 185.10.9.42 mx1.pub.mailpod13-cph3.one.com AS51468 One.com A/S
10 10800s mx2.pub.mailpod13-cph3.one.com 185.10.9.43 mx2.pub.mailpod13-cph3.one.com AS51468 One.com A/S
10 10800s mx3.pub.mailpod13-cph3.one.com 185.10.9.44 mx3.pub.mailpod13-cph3.one.com AS51468 One.com A/S
10 10800s mx4.pub.mailpod13-cph3.one.com 185.10.9.45 mx4.pub.mailpod13-cph3.one.com AS51468 One.com A/S

🔷 AAAA Records (IPv6)#

1 records   58ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a02:2350:5:102:29:303e:32d9:1b03 3600s — AS51468 One.com A/S 2a02:2350:0:0:0:0:0:0/32 🇩🇰 Denmark Copenhagen

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records   180ms
TXT Record
MS=ms21045969
v=spf1 include:_custspf.one.com ~all

✉️ SPF#

PolicyRecord (collatz-consulting.dk)
~all (soft fail) v=spf1 include:_custspf.one.com ~all

📨 DMARC#

PolicyRecord (_dmarc.collatz-consulting.dk)
p=quarantine v=DMARC1; p=quarantine

📬 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 2026-10-11 13:50:04
www77.111.240.133 2a02:2350:5:102:29:303e:32d9:1b03 (AS51468) (address records, no CNAME)
www vs bare domainSame network
WildcardNo
Denial of existenceNSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

4 records   112ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx1.pub.mailpod13-cph3.one.com DANE-EE · SPKI · SHA-256 BE8C554E6A2A9BFE9F87080F0AE71BAD…
SMTP _25._tcp.mx2.pub.mailpod13-cph3.one.com DANE-EE · SPKI · SHA-256 BE8C554E6A2A9BFE9F87080F0AE71BAD…
SMTP _25._tcp.mx3.pub.mailpod13-cph3.one.com DANE-EE · SPKI · SHA-256 BE8C554E6A2A9BFE9F87080F0AE71BAD…
SMTP _25._tcp.mx4.pub.mailpod13-cph3.one.com DANE-EE · SPKI · SHA-256 BE8C554E6A2A9BFE9F87080F0AE71BAD…

🔐 DNSSEC#

73ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

47ms
FieldValue
Serial2026090401
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s

📋 Registration#

WHOIS fetched 2026-10-06 05:09:23
FieldValue
RegistrarONE.COM A/S
Registered2020-09-27
Expires2027-09-30 (344d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
57ms
A
57ms
MX
50ms
AAAA
58ms
TXT
180ms
CAA
29ms
HTTPS
57ms
TLSA
112ms
SOA
47ms
MTA-STS
40ms
DNSSEC
73ms
SRV
78ms
Total
599ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-11 13:50:04 589ms 2 NS 1 A 4 MX 🔒 Secure
2026-10-06 04:43:31 985ms 2 NS 1 A 4 MX 🔒 Secure
2026-10-01 03:55:40 shown 599ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-29 23:56:11 590ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-18 04:56:22 659ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-04 09:52:05 596ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-02 02:26:22 718ms 2 NS 1 A 4 MX 🔒 Secure
2026-08-28 18:18:10 584ms 2 NS 1 A 4 MX 🔒 Secure
2026-08-11 21:29:46 2829ms 2 NS 1 A 4 MX 🔒 Secure
2026-08-06 16:26:20 3641ms 2 NS 1 A 4 MX 🔒 Secure
2026-07-06 06:38:39 979ms 2 NS 1 A 4 MX 🔒 Secure
2026-07-02 13:29:57 2655ms 2 NS 1 A 4 MX 🔒 Secure
2026-06-20 01:46:10 2316ms 2 NS 1 A 4 MX 🔒 Secure
2026-06-19 13:23:07 1147ms 2 NS 1 A 4 MX 🔒 Secure
2026-06-18 13:48:26 3404ms 2 NS 1 A 4 MX 🔒 Secure
2026-06-16 21:46:12 700ms 2 NS 1 A 4 MX 🔒 Secure
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