seisbye.dk

📜 Historical scan 2026-06-28 15:37:48  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

seisbye.dk is a .dk domain served by 2 nameservers (connie.ns.cloudflare.com, graham.ns.cloudflare.com). It was registered on 1 October 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.82.51 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.pub.mailpod2-cph3.one.com, mx2.pub.mailpod2-cph3.one.com and 1 more. The zone is not DNSSEC-signed, has no 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   32ms
NameserverIP addressesPTRASN / ISP
connie.ns.cloudflare.com 108.162.192.247
172.64.32.247
173.245.58.247
2606:4700:50::adf5:3af7
2803:f800:50::6ca2:c0f7
2a06:98c1:50::ac40:20f7		 connie.ns.cloudflare.com
connie.ns.cloudflare.com
connie.ns.cloudflare.com
connie.ns.cloudflare.com
connie.ns.cloudflare.com
connie.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
graham.ns.cloudflare.com 108.162.193.171
172.64.33.171
173.245.59.171
2606:4700:58::adf5:3bab
2803:f800:50::6ca2:c1ab
2a06:98c1:50::ac40:21ab		 graham.ns.cloudflare.com
graham.ns.cloudflare.com
graham.ns.cloudflare.com
graham.ns.cloudflare.com
graham.ns.cloudflare.com
graham.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.

🌍 A Records#

2 records   49ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.82.51 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.153.143 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

3 records   36ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mx1.pub.mailpod2-cph3.one.com 104.37.34.246 mx1.pub.mailpod12-cph3.one.com AS51468 One.com A/S
10 300s mx2.pub.mailpod2-cph3.one.com 104.37.34.247 mx2.pub.mailpod12-cph3.one.com AS51468 One.com A/S
10 300s mx3.pub.mailpod2-cph3.one.com 104.37.34.248 mx3.pub.mailpod12-cph3.one.com AS51468 One.com A/S

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover104.21.82.51
🔶 Autoconfig172.67.153.143

🔷 AAAA Records (IPv6)#

2 records   33ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3030::6815:5233 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3033::ac43:998f 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   43ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.82.51,172.67.153.143 ech=AEX+DQBBVQAgACB8rErNpyYbymQGWggG5InLjm8QM2igFNbioWz9s2yADgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:5233,2606:4700:3033::ac43:998f

📝 TXT Records#

1 records   207ms
TXT Record
v=spf1 include:_custspf.one.com -all

✉️ SPF#

PolicyRecord (seisbye.dk)
-all (hard fail) v=spf1 include:_custspf.one.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#

latest probe, not this scan · checked 2026-10-17 23:54:45
www104.21.82.51 172.67.153.143 2606:4700:3030::6815:5233 2606:4700:3033::ac43:998f (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardYes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

3 records   77ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx1.pub.mailpod2-cph3.one.com DANE-EE · SPKI · SHA-256 D91CB8AC124CB360F986182813BDF3FD…
SMTP _25._tcp.mx2.pub.mailpod2-cph3.one.com DANE-EE · SPKI · SHA-256 D91CB8AC124CB360F986182813BDF3FD…
SMTP _25._tcp.mx3.pub.mailpod2-cph3.one.com DANE-EE · SPKI · SHA-256 D91CB8AC124CB360F986182813BDF3FD…

🔐 DNSSEC#

67ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

42ms
FieldValue
Serial2407485830
Primary NS (MNAME)connie.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-18 00:08:06
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2003-10-01
Expires2027-10-31 (378d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet
📋 WHOIS#

⏱️ Lookup Timing#

NS
32ms
A
49ms
MX
36ms
AAAA
33ms
TXT
207ms
CAA
42ms
HTTPS
43ms
TLSA
77ms
SOA
42ms
MTA-STS
47ms
DNSSEC
67ms
SRV
65ms
Total
966ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-17 23:54:45 1657ms 2 NS 2 A 3 MX 🔓 Insecure
2026-10-09 09:41:53 519ms 2 NS 2 A 3 MX 🔓 Insecure
2026-10-01 03:24:27 892ms 2 NS 2 A 3 MX 🔓 Insecure
2026-09-30 03:13:36 852ms 2 NS 2 A 3 MX 🔓 Insecure
2026-09-28 02:39:46 712ms 2 NS 2 A 3 MX 🔓 Insecure
2026-09-04 07:45:09 1847ms 2 NS 2 A 3 MX 🔓 Insecure
2026-08-19 09:02:57 8066ms 2 NS 2 A 3 MX 🔓 Insecure
2026-08-03 10:12:52 1810ms 2 NS 2 A 3 MX 🔓 Insecure
2026-06-28 15:37:48 shown 966ms 2 NS 2 A 3 MX 🔓 Insecure
2026-06-26 04:55:32 1906ms 2 NS 2 A 3 MX 🔓 Insecure
2026-06-25 12:08:32 861ms 2 NS 2 A 3 MX 🔓 Insecure
2026-06-18 03:55:47 859ms 2 NS 2 A 3 MX 🔓 Insecure
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