mail.open-sec.org - robtex.com

mail.open-sec.org

DNSSEC⚠️ Not signed
A2606:4700:3037::6815:3a55🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:9e63🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.58.85Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.158.99🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.58.85, 172.67.158.99
IPv6 hints2606:4700:3037::6815:3a55, 2606:4700:3037::ac43:9e63
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=96, name=cloudflare-ech.com

open-sec.org

DNSSEC⚠️ Not signed
A2606:4700:3037::6815:3a55🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:9e63🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.58.85Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.158.99🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSdahlia.ns.cloudflare.com ⭐
NSsullivan.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.58.85, 172.67.158.99
IPv6 hints2606:4700:3037::6815:3a55, 2606:4700:3037::ac43:9e63
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=96, name=cloudflare-ech.com
SOAdahlia.ns.cloudflare.comdns@cloudflare.com serial=2401000282

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DNS History

9 records (4 active, 5 former)

20162017201820192020202120222023202420252026NSdns-s01.nlrs.jpdns-s02.nlrs.jpMXopen-sec.orgA104.21.58.85172.67.158.992606:4700:3037::6815:3a552606:4700:3037::ac43:9e63113.208.63.110CNAMEopen-sec.org
○NSdns-s01.nlrs.jp2015-10-19 → 2016-05-01 · 4 obs
● 2015-10-19 13:29:34
● 2016-05-01 08:23:38
○ 2026-04-23 08:15:34
○ 2026-04-27 11:00:32
○NSdns-s02.nlrs.jp2015-10-19 → 2016-05-01 · 4 obs
● 2015-10-19 13:29:34
● 2016-05-01 08:23:38
○ 2026-04-23 08:15:34
○ 2026-04-27 11:00:32
○MXopen-sec.org2015-10-19 → 2016-05-01 · 4 obs
● 2015-10-19 13:29:34
● 2016-05-01 08:23:38
○ 2026-04-23 08:15:34
○ 2026-04-27 11:00:32
●A104.21.58.852026-04-23 → 2026-04-27 · 3 obs
○ 2016-05-01 08:23:38
● 2026-04-23 08:15:34
● 2026-04-27 11:00:32
○A113.208.63.1102015-10-19 → 2016-05-01 · 4 obs
● 2015-10-19 13:29:34
● 2016-05-01 08:23:38
○ 2026-04-23 08:15:34
○ 2026-04-27 11:00:32
●A172.67.158.992026-04-23 → 2026-04-27 · 3 obs
○ 2016-05-01 08:23:38
● 2026-04-23 08:15:34
● 2026-04-27 11:00:32
●A2606:4700:3037::6815:3a552026-04-23 → 2026-04-27 · 3 obs
○ 2016-05-01 08:23:38
● 2026-04-23 08:15:34
● 2026-04-27 11:00:32
●A2606:4700:3037::ac43:9e632026-04-23 → 2026-04-27 · 3 obs
○ 2016-05-01 08:23:38
● 2026-04-23 08:15:34
● 2026-04-27 11:00:32
○CNAMEopen-sec.org2015-10-19 → 2016-05-01 · 4 obs
● 2015-10-19 13:29:34
● 2016-05-01 08:23:38
○ 2026-04-23 08:15:34
○ 2026-04-27 11:00:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb2.org.afilias-nst.org, b0.org.afilias-nst.org, d0.org.afilias-nst.org-
open-sec.orgsullivan.ns.cloudflare.com, dahlia.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.192.89

NS records: sullivan.ns.cloudflare.com, dahlia.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for open-sec.org (unsigned zone)

⏱️ Timing

Total: 848ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.58.85, 172.67.158.99
AAAA22606:4700:3037::ac43:9e63, 2606:4700:3037::6815:3a55
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

mail.open-sec.org maps to four IP numbers: 2606:4700:3037::6815:3a55, 2606:4700:3037::ac43:9e63, 104.21.58.85 and 172.67.158.99.

Other host names such as vpnc.eu.org, kingfisher-insurance.net, convida.com.ar, (0x62656567)roup.io and ca12367.com share IPs with mail.open-sec.org.