seydlitz.dk

📜 Historical scan 2026-09-24 21:10:46 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

seydlitz.dk is a .dk domain served by 2 nameservers (ben.ns.cloudflare.com, vera.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.41.89 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by seydlitz-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 36ms

Nameserver	IP addresses	PTR	ASN / ISP
ben.ns.cloudflare.com	108.162.193.103 172.64.33.103 173.245.59.103 2606:4700:58::adf5:3b67 2803:f800:50::6ca2:c167 2a06:98c1:50::ac40:2167	ben.ns.cloudflare.com ben.ns.cloudflare.com ben.ns.cloudflare.com ben.ns.cloudflare.com ben.ns.cloudflare.com ben.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
vera.ns.cloudflare.com	108.162.192.147 172.64.32.147 173.245.58.147 2606:4700:50::adf5:3a93 2803:f800:50::6ca2:c093 2a06:98c1:50::ac40:2093	vera.ns.cloudflare.com vera.ns.cloudflare.com vera.ns.cloudflare.com vera.ns.cloudflare.com vera.ns.cloudflare.com vera.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 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.41.89	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.163.71	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	seydlitz-dk.mail.protection.outlook.com	2a01:111:f403:c967::c 2a01:111:f403:ca04::e 2a01:111:f403:ca09::24 2a01:111:f403:ca21::8 52.101.181.153 52.101.68.29 52.101.68.39 52.101.73.145	mail-cpjpr05cu00204.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00100.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am6pr02cu00301.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 → 40.104.116.56
🔶 Autoconfig	104.21.41.89

🔷 AAAA Records (IPv6)#

2 records 43ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::6815:2959	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::ac43:a347	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 46ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.41.89,172.67.163.71 ech=AEX+DQBBvQAgACC4H2RvkolmHj63dKqKZoFxc31gc97k0NPo+S3NKnxVVwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2959,2606:4700:3036::ac43:a347

📝 TXT Records#

3 records 208ms

TXT Record
google-site-verification=1vujFx54EnvPzbC0ceWD2tRmrDK5gus2a9Lhdi_acQY
MS=ms65754059
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (seydlitz.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 2026-10-08 06:33:17

www	104.21.41.89 172.67.163.71 2606:4700:3035::6815:2959 2606:4700:3036::ac43:a347 (AS13335) (address records, no CNAME)
www vs bare domain	Same network seydlitz.dk: 104.21.41.89 172.67.163.71 2606:4700:3035::6815:2959 2606:4700:3036::ac43:a347 (AS13335) www.seydlitz.dk: 104.21.41.89 172.67.163.71 2606:4700:3035::6815:2959 2606:4700:3036::ac43:a347 (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#

73ms

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	2413686106
Primary NS (MNAME)	ben.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

36ms

32ms

41ms

AAAA

43ms

TXT

208ms

CAA

43ms

HTTPS

46ms

TLSA

623ms

SOA

0ms

MTA-STS

63ms

DNSSEC

73ms

SRV

67ms

Total

1293ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 06:33:17	1128ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-01 23:03:41	3141ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-24 21:10:46 shown	1293ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-03 17:09:14	1971ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 10:09:13	1616ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-03 21:35:59	17507ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-26 21:14:08	1407ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-23 17:20:34	1205ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 13:43:55	4795ms	2 NS 2 A 1 MX	🔓 Insecure