mail.dvsystems.co - robtex.com

mail.dvsystems.co

DNSSEC⚠️ Not signed
A2606:4700::6812:1485πŸ‡ΊπŸ‡Έ Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A2606:4700::6812:1585πŸ‡ΊπŸ‡Έ Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A104.18.20.133Cloudflare104.18.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A104.18.21.133Cloudflare104.18.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
HTTPSHTTP/2 βœ“ hints match
IPv4 hints104.18.20.133, 104.18.21.133
IPv6 hints2606:4700::6812:1485, 2606:4700::6812:1585

dvsystems.co

DNSSEC⚠️ Not signed
A2606:4700::6812:1485πŸ‡ΊπŸ‡Έ Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A2606:4700::6812:1585πŸ‡ΊπŸ‡Έ Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A104.18.20.133Cloudflare104.18.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A104.18.21.133Cloudflare104.18.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
NSjoan.ns.cloudflare.com ⭐
NSowen.ns.cloudflare.com
TXTv=spf1 -all
HTTPSHTTP/2 βœ“ hints match
IPv4 hints104.18.20.133, 104.18.21.133
IPv6 hints2606:4700::6812:1485, 2606:4700::6812:1585
SOAjoan.ns.cloudflare.comdns@cloudflare.com serial=2403794824

Previously MX for

Same first word

Similar names

DNS History

5 records (4 active, 1 former)

20162017201820192020202120222023202420252026A104.18.20.133104.18.21.1332606:4700::6812:14852606:4700::6812:158550.22.174.7
●A104.18.20.1332026-03-22 β†’ 2026-05-10 Β· 3 obs
β—‹ 2016-07-03 09:11:22
● 2026-03-22 19:10:30
● 2026-05-10 22:26:54
●A104.18.21.1332026-03-22 β†’ 2026-05-10 Β· 3 obs
β—‹ 2016-07-03 09:11:22
● 2026-03-22 19:10:30
● 2026-05-10 22:26:54
●A2606:4700::6812:14852026-03-22 β†’ 2026-05-10 Β· 3 obs
β—‹ 2016-07-03 09:11:22
● 2026-03-22 19:10:30
● 2026-05-10 22:26:54
●A2606:4700::6812:15852026-03-22 β†’ 2026-05-10 Β· 3 obs
β—‹ 2016-07-03 09:11:22
● 2026-03-22 19:10:30
● 2026-05-10 22:26:54
β—‹A50.22.174.72015-08-14 β†’ 2016-07-03 Β· 4 obs
● 2015-08-14 16:40:22
● 2016-07-03 09:11:22
β—‹ 2026-03-22 19:10:30
β—‹ 2026-05-10 22:26:54

πŸ” DNS Trace

πŸ“‹ Delegation Chain

ZoneNameserversGlue
coa.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co-
dvsystems.cojoan.ns.cloudflare.com, owen.ns.cloudflare.com-

βœ… Authoritative Response

Server:172.64.32.173

NS records: joan.ns.cloudflare.com, owen.ns.cloudflare.com

πŸ”’ DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dvsystems.co (unsigned zone)

⏱️ Timing

Total: 471ms | Queries: -

πŸ“„ Records

TypeCountSample Data
A2104.18.21.133, 104.18.20.133
AAAA22606:4700::6812:1585, 2606:4700::6812:1485
HTTPS1{"priority":1,"target":".","alpn":["h2"]

Analysis

IP Addresses

Four IP numbers are pointed to by mail.dvsystems.co: 2606:4700::6812:1485, 2606:4700::6812:1585, 104.18.20.133 and 104.18.21.133.

other host names including mechetronics.co.uk, dvsystems.co, mail2.vaxjo.com, reachreactor.ca and smlinc.com share IP numbers with mail.dvsystems.co.