seo-underviser.dk

📜 Historical scan 2026-06-18 03:49:17 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

seo-underviser.dk is a .dk domain served by 2 nameservers (josh.ns.cloudflare.com, lisa.ns.cloudflare.com). It was registered on 4 September 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.78.110 is hosted by Cloudflare, Inc. (AS13335). 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 256ms

Nameserver	IP addresses	PTR	ASN / ISP
josh.ns.cloudflare.com	108.162.193.126 172.64.33.126 173.245.59.126 2606:4700:58::adf5:3b7e 2803:f800:50::6ca2:c17e 2a06:98c1:50::ac40:217e	josh.ns.cloudflare.com josh.ns.cloudflare.com josh.ns.cloudflare.com josh.ns.cloudflare.com josh.ns.cloudflare.com josh.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
lisa.ns.cloudflare.com	108.162.192.131 172.64.32.131 173.245.58.131 2606:4700:50::adf5:3a83 2803:f800:50::6ca2:c083 2a06:98c1:50::ac40:2083	lisa.ns.cloudflare.com lisa.ns.cloudflare.com lisa.ns.cloudflare.com lisa.ns.cloudflare.com lisa.ns.cloudflare.com lisa.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 356ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.78.110	—	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.220.99	—	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	194.126.234.120
🔶 Autoconfig	194.126.234.120

🔷 AAAA Records (IPv6)#

2 records 164ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::ac43:dc63	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:4e6e	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 355ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.78.110,172.67.220.99 ech=AEX+DQBB5AAgACAp9izuzZ9Qy/F0fdNQl7lSpSP5fClpvP6OEJ8Riw31bwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:dc63,2606:4700:3035::6815:4e6e

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 2026-10-12 07:28:55

www	104.21.78.110 172.67.220.99 2606:4700:3034::6815:4e6e 2606:4700:3035::ac43:dc63 (AS13335) (address records, no CNAME)
www vs bare domain	Same network seo-underviser.dk: 104.21.78.110 172.67.220.99 2606:4700:3034::6815:4e6e 2606:4700:3035::ac43:dc63 (AS13335) www.seo-underviser.dk: 104.21.78.110 172.67.220.99 2606:4700:3034::6815:4e6e 2606:4700:3035::ac43:dc63 (AS13335)
Wildcard	Yes: any name under the zone resolves

🔗 TLSA / DANE#

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

🔐 DNSSEC#

770ms

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

🏷️ SOA#

185ms

Field	Value
Serial	2406455499
Primary NS (MNAME)	josh.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-05 16:10:08

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2011-09-04
Expires	2029-09-30 (1073d)

📋 WHOIS#

⏱️ Lookup Timing#

256ms

356ms

280ms

AAAA

164ms

TXT

3016ms

CAA

488ms

HTTPS

355ms

TLSA

1552ms

SOA

185ms

MTA-STS

415ms

DNSSEC

770ms

SRV

621ms

Total

23260ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 07:28:54	1412ms	2 NS 2 A 0 MX	🔓 Insecure
2026-10-11 06:18:33	1976ms	2 NS 2 A 0 MX	🔓 Insecure
2026-10-10 04:59:55	1540ms	2 NS 2 A 0 MX	🔓 Insecure
2026-10-06 18:21:27	1271ms	2 NS 2 A 0 MX	🔓 Insecure
2026-10-05 15:58:04	1816ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-29 15:30:49	1572ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-15 18:20:22	9443ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-26 21:41:05	733ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-08 17:58:26	1188ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-18 03:55:04	19609ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-18 03:49:17 shown	23260ms	2 NS 2 A 0 MX	🔓 Insecure