sejr-thomsen.dk

📜 Historical scan 2026-08-12 06:14:09 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sejr-thomsen.dk is a .dk domain served by 2 nameservers (arvind.ns.cloudflare.com, uma.ns.cloudflare.com). It was registered on 19 January 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.38.177 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by sejrthomsen-dk01b.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 39ms

Nameserver	IP addresses	PTR	ASN / ISP
arvind.ns.cloudflare.com	108.162.195.227 162.159.44.227 172.64.35.227 2606:4700:58::a29f:2ce3 2803:f800:50::6ca2:c3e3 2a06:98c1:50::ac40:23e3	arvind.ns.cloudflare.com arvind.ns.cloudflare.com arvind.ns.cloudflare.com arvind.ns.cloudflare.com arvind.ns.cloudflare.com arvind.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
uma.ns.cloudflare.com	108.162.192.146 172.64.32.146 173.245.58.146 2606:4700:50::adf5:3a92 2803:f800:50::6ca2:c092 2a06:98c1:50::ac40:2092	uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com uma.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
104.21.38.177	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.137.28	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	sejrthomsen-dk01b.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca09::4 2a01:111:f403:ca09::9 2a01:111:f403:ca09::c 52.101.68.39 52.101.73.1 52.101.73.2 52.101.73.6	mail-db6pr03cu00105.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-am6pr04cu00306.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	172.67.137.28
🔶 Autoconfig	104.21.38.177

🔷 AAAA Records (IPv6)#

2 records 47ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::6815:26b1	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:891c	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=104.21.38.177,172.67.137.28 ech=AEX+DQBBUgAgACApX7zJGzc2YT6igXiXwkBCe+2AqFgEbRjVaSzuvIIPbgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:26b1,2606:4700:3037::ac43:891c

📝 TXT Records#

2 records 218ms

TXT Record
MS=ms24148628
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (sejr-thomsen.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 2026-10-15 08:22:04

www	104.21.38.177 172.67.137.28 2606:4700:3034::6815:26b1 2606:4700:3037::ac43:891c (AS13335) (address records, no CNAME)
www vs bare domain	Same network sejr-thomsen.dk: 104.21.38.177 172.67.137.28 2606:4700:3034::6815:26b1 2606:4700:3037::ac43:891c (AS13335) www.sejr-thomsen.dk: 104.21.38.177 172.67.137.28 2606:4700:3034::6815:26b1 2606:4700:3037::ac43:891c (AS13335)
Wildcard	Yes: any name under the zone resolves

🔎 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#

101ms

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	2411915881
Primary NS (MNAME)	arvind.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-09 15:54:08

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2013-01-19
Expires	2027-01-31 (95d)

📋 WHOIS#

⏱️ Lookup Timing#

39ms

46ms

41ms

AAAA

47ms

TXT

218ms

CAA

60ms

HTTPS

48ms

TLSA

916ms

SOA

0ms

MTA-STS

74ms

DNSSEC

101ms

SRV

83ms

Total

2398ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 08:22:04	3241ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-14 04:53:13	1083ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-09 15:25:54	1895ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-19 04:38:43	1143ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-17 20:40:25	9423ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-12 06:14:09 shown	2398ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-18 00:22:11	1165ms	2 NS 2 A 1 MX	🔓 Insecure