mail.isoctr.org - robtex.com

mail.isoctr.org

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:5642🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:d859🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.86.66Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.216.89🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.86.66, 172.67.216.89
IPv6 hints2606:4700:3033::6815:5642, 2606:4700:3035::ac43:d859
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=188, name=cloudflare-ech.com

isoctr.org

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:5642🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:d859🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.86.66Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.216.89🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSetta.ns.cloudflare.com ⭐
NSharley.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.86.66, 172.67.216.89
IPv6 hints2606:4700:3033::6815:5642, 2606:4700:3035::ac43:d859
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=188, name=cloudflare-ech.com
SOAetta.ns.cloudflare.comdns@cloudflare.com serial=2407416235
WOT: SAFE (60/100)
WOT: SAFE (62/100)

Previously MX for

isoctr.org

Same first word

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DNS History

12 records (4 active, 8 former)

20162017201820192020202120222023202420252026A104.21.86.66172.67.216.892606:4700:3033::6815:56422606:4700:3035::ac43:d859168.144.68.66172.64.80.1188.114.96.0188.114.97.02606:4700:3035::6815:56422a06:98c1:3120::2a06:98c1:3121::95.214.52.137
●A104.21.86.662026-03-09 → 2026-07-15 · 9 obs
○ 2016-12-30 15:47:22
● 2026-03-09 15:31:58
○ 2026-03-10 21:09:00
○ 2026-04-06 00:39:00
● 2026-06-08 18:14:02
● 2026-06-14 02:13:08
○ 2026-06-14 19:40:48
● 2026-07-08 11:44:06
● 2026-07-15 21:38:16
○A168.144.68.662015-07-08 → 2016-12-30 · 4 obs
● 2015-07-08 04:23:34
● 2016-12-30 15:47:22
○ 2026-03-09 15:31:58
○ 2026-07-15 21:38:16
○A172.64.80.12026-03-10 → 2026-03-10 · 4 obs
○ 2026-03-09 15:31:58
● 2026-03-10 21:09:00
○ 2026-04-06 00:39:00
○ 2026-07-15 21:38:16
●A172.67.216.892026-03-09 → 2026-07-15 · 9 obs
○ 2016-12-30 15:47:22
● 2026-03-09 15:31:58
○ 2026-03-10 21:09:00
○ 2026-04-06 00:39:00
● 2026-06-08 18:14:02
● 2026-06-14 02:13:08
○ 2026-06-14 19:40:48
● 2026-07-08 11:44:06
● 2026-07-15 21:38:16
○A188.114.96.02026-04-06 → 2026-06-14 · 7 obs
○ 2026-03-10 21:09:00
● 2026-04-06 00:39:00
○ 2026-06-08 18:14:02
○ 2026-06-14 02:13:08
● 2026-06-14 19:40:48
○ 2026-07-08 11:44:06
○ 2026-07-15 21:38:16
○A188.114.97.02026-04-06 → 2026-06-14 · 7 obs
○ 2026-03-10 21:09:00
● 2026-04-06 00:39:00
○ 2026-06-08 18:14:02
○ 2026-06-14 02:13:08
● 2026-06-14 19:40:48
○ 2026-07-08 11:44:06
○ 2026-07-15 21:38:16
●A2606:4700:3033::6815:56422026-07-08 → 2026-07-15 · 3 obs
○ 2026-06-14 19:40:48
● 2026-07-08 11:44:06
● 2026-07-15 21:38:16
○A2606:4700:3035::6815:56422026-03-09 → 2026-06-14 · 8 obs
○ 2016-12-30 15:47:22
● 2026-03-09 15:31:58
● 2026-03-10 21:09:00
○ 2026-04-06 00:39:00
● 2026-06-08 18:14:02
● 2026-06-14 02:13:08
○ 2026-06-14 19:40:48
○ 2026-07-15 21:38:16
●A2606:4700:3035::ac43:d8592026-03-09 → 2026-07-15 · 9 obs
○ 2016-12-30 15:47:22
● 2026-03-09 15:31:58
● 2026-03-10 21:09:00
○ 2026-04-06 00:39:00
● 2026-06-08 18:14:02
● 2026-06-14 02:13:08
○ 2026-06-14 19:40:48
● 2026-07-08 11:44:06
● 2026-07-15 21:38:16
○A2a06:98c1:3120::2026-04-06 → 2026-06-14 · 7 obs
○ 2026-03-10 21:09:00
● 2026-04-06 00:39:00
○ 2026-06-08 18:14:02
○ 2026-06-14 02:13:08
● 2026-06-14 19:40:48
○ 2026-07-08 11:44:06
○ 2026-07-15 21:38:16
○A2a06:98c1:3121::2026-04-06 → 2026-06-14 · 7 obs
○ 2026-03-10 21:09:00
● 2026-04-06 00:39:00
○ 2026-06-08 18:14:02
○ 2026-06-14 02:13:08
● 2026-06-14 19:40:48
○ 2026-07-08 11:44:06
○ 2026-07-15 21:38:16
○A95.214.52.1372026-03-09 → 2026-07-15 · 2 obs
○ 2026-03-09 15:31:58
○ 2026-07-15 21:38:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org-
isoctr.orgharley.ns.cloudflare.com, etta.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.44.128

NS records: harley.ns.cloudflare.com, etta.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for isoctr.org (unsigned zone)

⏱️ Timing

Total: 1813ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.216.89, 104.21.86.66
AAAA22606:4700:3033::6815:5642, 2606:4700:3035::ac43:d859
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

mail.isoctr.org points to the four IP addresses 104.21.86.66, 172.67.216.89, 2606:4700:3033::6815:5642 and 2606:4700:3035::ac43:d859.

fortworthheating.repair, jihy.com, humanism.ro plus two other host names have IP numbers in common with mail.isoctr.org.