seisbye.dk

📜 Historical scan 2026-09-30 03:13:36  ·  ← 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   35ms
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   42ms
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   45ms
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   38ms
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   34ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.82.51,172.67.153.143 ech=AEX+DQBBFgAgACDQh6blBpSmICDnbiaFgpEWOgrKyZ/lZRK79wZHpO/tNgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:5233,2606:4700:3033::ac43:998f

📝 TXT Records#

1 records   174ms
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

🔏 ACME Challenge#

TypeNameValue
TXT _acme-challenge.seisbye.dk EUVWXb735IQceNL571jHNu_hdh5MGxAmGRjH2AYQd4o
TXT _acme-challenge.seisbye.dk uVjBbnUV8Emn-q41jnTaOSP7shKlESknAYX6AImQzTo

🔗 TLSA / DANE#

3 records   101ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx1.pub.mailpod2-cph3.one.com DANE-EE · SPKI · SHA-256 2CDDC5D748A3C02AC19FF7BC33AA01A5…
SMTP _25._tcp.mx2.pub.mailpod2-cph3.one.com DANE-EE · SPKI · SHA-256 2CDDC5D748A3C02AC19FF7BC33AA01A5…
SMTP _25._tcp.mx3.pub.mailpod2-cph3.one.com DANE-EE · SPKI · SHA-256 2CDDC5D748A3C02AC19FF7BC33AA01A5…

🔐 DNSSEC#

119ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

48ms
FieldValue
Serial2416173150
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 (377d)

🔗 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
35ms
A
42ms
MX
45ms
AAAA
38ms
TXT
174ms
CAA
31ms
HTTPS
34ms
TLSA
101ms
SOA
48ms
MTA-STS
64ms
DNSSEC
119ms
SRV
62ms
Total
852ms

🕐 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 shown 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 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
dhd.dk [/] search Domains, Hosts & DNS — .dk zone