seierup.dk

📜 Historical scan 2026-09-25 10:42:13 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

seierup.dk is a .dk domain served by 2 nameservers (jasper.ns.cloudflare.com, tina.ns.cloudflare.com). It was registered on 13 September 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.58.55 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by seierup-dk.mail.protection.outlook.com. 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 44ms

Nameserver	IP addresses	PTR	ASN / ISP
jasper.ns.cloudflare.com	108.162.195.182 162.159.44.182 172.64.35.182 2606:4700:58::a29f:2cb6 2803:f800:50::6ca2:c3b6 2a06:98c1:50::ac40:23b6	jasper.ns.cloudflare.com jasper.ns.cloudflare.com jasper.ns.cloudflare.com jasper.ns.cloudflare.com jasper.ns.cloudflare.com jasper.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
tina.ns.cloudflare.com	108.162.192.230 172.64.32.230 173.245.58.230 2606:4700:50::adf5:3ae6 2803:f800:50::6ca2:c0e6 2a06:98c1:50::ac40:20e6	tina.ns.cloudflare.com tina.ns.cloudflare.com tina.ns.cloudflare.com tina.ns.cloudflare.com tina.ns.cloudflare.com tina.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 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.58.55	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.168.4	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	seierup-dk.mail.protection.outlook.com	2a01:111:f403:c967::c 2a01:111:f403:ca04::b 2a01:111:f403:ca21::10 2a01:111:f403:ca3c::8 52.101.185.114 52.101.68.12 52.101.91.153 52.101.91.21	mail-cpjpr05cu00204.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-matpr05cu00100.inbound.protection.outlook.com mail-zrxpr05cu00100.inbound.protection.outlook.com mail-zrxpr04cu00102.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00101.inbound.protection.outlook.com mail-matpr05cu00105.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.24

🔷 AAAA Records (IPv6)#

2 records 38ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::6815:3a37	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::ac43:a804	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 48ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.58.55,172.67.168.4 ech=AEX+DQBB3AAgACAoZRjyphsVg7R/pv8PpZ03DLx+gLGtM2atVhv4Ia3EPQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:3a37,2606:4700:3033::ac43:a804

📝 TXT Records#

3 records 201ms

TXT Record
google-site-verification=1J4a8sDgD4W3Zzu7ikggyqbcUtxWP526f5TW7JtMR9E
MS=ms67320452
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (seierup.dk)
-all (hard fail)	v=spf1 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#

latest probe, not this scan · checked 2026-10-14 04:33:30

www	188.114.96.1 188.114.97.1 2606:4700:3033::6815:3a37 2606:4700:3033::ac43:a804 (AS13335) (address records, no CNAME)
www vs bare domain	Same network seierup.dk: 188.114.96.1 188.114.97.1 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) www.seierup.dk: 188.114.96.1 188.114.97.1 2606:4700:3033::6815:3a37 2606:4700:3033::ac43:a804 (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

9069ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2415131306
Primary NS (MNAME)	jasper.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-06 21:20:20

Field	Value
Registrar	CURANET A/S
Registered	2019-09-13
Expires	2027-09-30 (344d)

📋 WHOIS#

⏱️ Lookup Timing#

44ms

38ms

47ms

AAAA

38ms

TXT

201ms

CAA

43ms

HTTPS

48ms

TLSA

316ms

SOA

0ms

MTA-STS

63ms

DNSSEC

9069ms

SRV

60ms

Total

9776ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-14 04:33:30	1073ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-25 10:42:13 shown	9776ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-19 13:49:02	2333ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-25 10:23:29	1354ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-24 07:03:56	2046ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-15 18:45:32	5852ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-21 15:36:22	1583ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-02 17:38:34	1254ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 20:30:05	1629ms	2 NS 2 A 1 MX	🔓 Insecure