netprofessor.dk

📜 Historical scan 2026-09-10 23:18:08 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

netprofessor.dk is a .dk domain served by 2 nameservers (jewel.ns.cloudflare.com, karl.ns.cloudflare.com). It was registered on 25 March 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.40.47 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.netprofessor.dk, mx2.netprofessor.dk. 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 114ms

Nameserver	IP addresses	PTR	ASN / ISP
jewel.ns.cloudflare.com	108.162.194.171 162.159.38.171 172.64.34.171 2606:4700:50::a29f:26ab 2803:f800:50::6ca2:c2ab 2a06:98c1:50::ac40:22ab	jewel.ns.cloudflare.com jewel.ns.cloudflare.com jewel.ns.cloudflare.com jewel.ns.cloudflare.com jewel.ns.cloudflare.com jewel.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
karl.ns.cloudflare.com	108.162.193.190 172.64.33.190 173.245.59.190 2606:4700:58::adf5:3bbe 2803:f800:50::6ca2:c1be 2a06:98c1:50::ac40:21be	karl.ns.cloudflare.com karl.ns.cloudflare.com karl.ns.cloudflare.com karl.ns.cloudflare.com karl.ns.cloudflare.com karl.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 114ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.40.47	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.175.191	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

2 records 125ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx1.netprofessor.dk	—	—	—
20	300s	mx2.netprofessor.dk	—	—	—

🔷 AAAA Records (IPv6)#

2 records 108ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::ac43:afbf	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:282f	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 72ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.40.47,172.67.175.191 ech=AEX+DQBB8AAgACDBSrBaqaqFcsMiwZeqQ5X+w4bCQMwDYJdsu6R/YUdXAwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:afbf,2606:4700:3035::6815:282f

📝 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 2026-10-07 20:24:13

www	104.21.40.47 172.67.175.191 2606:4700:3034::ac43:afbf 2606:4700:3035::6815:282f (AS13335) (address records, no CNAME)
www vs bare domain	Same network netprofessor.dk: 104.21.40.47 172.67.175.191 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) www.netprofessor.dk: 104.21.40.47 172.67.175.191 2606:4700:3034::ac43:afbf 2606:4700:3035::6815:282f (AS13335)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

146ms

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	2414352857
Primary NS (MNAME)	jewel.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-07 20:53:53

Field	Value
Registrar	Realtime Register B.V.
Registered	2025-03-25
Expires	2027-03-24 (153d)

📋 WHOIS#

⏱️ Lookup Timing#

114ms

125ms

AAAA

108ms

TXT

249ms

CAA

119ms

HTTPS

72ms

TLSA

463ms

SOA

0ms

MTA-STS

119ms

DNSSEC

146ms

SRV

152ms

Total

1943ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 20:24:13	1073ms	2 NS 2 A 2 MX	🔓 Insecure
2026-10-02 16:28:21	589ms	2 NS 2 A 2 MX	🔓 Insecure
2026-10-01 07:02:43	565ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-10 23:18:08 shown	1943ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-31 11:18:40	10118ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-26 19:57:44	711ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-09 16:29:25	16769ms	2 NS 2 A 2 MX	🔓 Insecure
2026-07-11 12:47:09	9919ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-21 16:01:06	773ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-20 04:59:23	828ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-19 13:24:55	3502ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-17 18:27:54	10901ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-17 16:44:27	1076ms	2 NS 2 A 2 MX	🔓 Insecure