mastertech.dk

📜 Historical scan 2026-07-20 13:09:22 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mastertech.dk is a .dk domain served by 2 nameservers (edna.ns.cloudflare.com, kai.ns.cloudflare.com). It was registered on 17 November 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.70.77 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 31ms

Nameserver	IP addresses	PTR	ASN / ISP
edna.ns.cloudflare.com	108.162.192.109 172.64.32.109 173.245.58.109 2606:4700:50::adf5:3a6d 2803:f800:50::6ca2:c06d 2a06:98c1:50::ac40:206d	edna.ns.cloudflare.com edna.ns.cloudflare.com edna.ns.cloudflare.com edna.ns.cloudflare.com edna.ns.cloudflare.com edna.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
kai.ns.cloudflare.com	108.162.193.188 172.64.33.188 173.245.59.188 2606:4700:58::adf5:3bbc 2803:f800:50::6ca2:c1bc 2a06:98c1:50::ac40:21bc	kai.ns.cloudflare.com kai.ns.cloudflare.com kai.ns.cloudflare.com kai.ns.cloudflare.com kai.ns.cloudflare.com kai.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 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.70.77	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.221.163	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 31ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::6815:464d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:dda3	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 35ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.70.77,172.67.221.163 ech=AEX+DQBB5AAgACCXQ4K5U5YYkvWJSdy1MsMRUSjOIQcakxELeXwyrv1xFwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:464d,2606:4700:3037::ac43:dda3

📝 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 2026-10-08 15:28:39

www	104.21.70.77 172.67.221.163 2606:4700:3032::6815:464d 2606:4700:3037::ac43:dda3 (AS13335) (address records, no CNAME)
www vs bare domain	Same network mastertech.dk: 104.21.70.77 172.67.221.163 2606:4700:3032::6815:464d 2606:4700:3037::ac43:dda3 (AS13335) www.mastertech.dk: 104.21.70.77 172.67.221.163 2606:4700:3032::6815:464d 2606:4700:3037::ac43:dda3 (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

65ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2409962064
Primary NS (MNAME)	edna.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-03 13:50:40

Field	Value
Registrar	CURANET A/S
Registered	1998-11-17
Expires	2026-12-31 (73d)

📋 WHOIS#

⏱️ Lookup Timing#

31ms

33ms

AAAA

31ms

TXT

191ms

CAA

35ms

HTTPS

35ms

TLSA

58ms

SOA

0ms

MTA-STS

53ms

DNSSEC

65ms

SRV

53ms

Total

980ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-06 14:15:58	2211ms	2 NS 2 A 3 MX	🔓 Insecure
2026-10-03 13:15:04	982ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-17 00:00:31	1276ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-12 16:11:21	1629ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-06 21:17:14	1528ms	2 NS 2 A 3 MX	🔓 Insecure
2026-08-28 10:34:30	762ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-19 20:08:08	869ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-08 03:58:13	980ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-26 17:45:55	816ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-20 13:09:22 shown	980ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-03 10:17:59	680ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-18 05:52:32	801ms	2 NS 2 A 0 MX	🔓 Insecure