seierup.dk

📜 Historical scan 2026-07-02 17:38:34 · ← 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 50ms

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 46ms

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 39ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	seierup-dk.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca04::c 2a01:111:f403:ca09::4 2a01:111:f403:ca09::8 52.101.68.16 52.101.73.1 52.101.73.19 52.101.73.4	mail-db4pr02cu00406.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-am0pr83cu00404.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 → 40.104.116.40

🔷 AAAA Records (IPv6)#

2 records 42ms

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 41ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.58.55,172.67.168.4 ech=AEX+DQBBNgAgACDMNyW8cD01HRJ4axeQroiQj+WzudABgt2+ORmO0cb8MQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:3a37,2606:4700:3033::ac43:a804

📝 TXT Records#

3 records 199ms

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#

66ms

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

🏷️ SOA#

59ms

Field	Value
Serial	2406295074
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#

50ms

46ms

39ms

AAAA

42ms

TXT

199ms

CAA

43ms

HTTPS

41ms

TLSA

338ms

SOA

59ms

MTA-STS

60ms

DNSSEC

66ms

SRV

63ms

Total

1254ms

🕐 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	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 shown	1254ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 20:30:05	1629ms	2 NS 2 A 1 MX	🔓 Insecure