mail2.isi.org - robtex.com

mail2.isi.org

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:49cd🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:c025🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.73.205Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.192.37🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.73.205, 172.67.192.37
IPv6 hints2606:4700:3031::6815:49cd, 2606:4700:3035::ac43:c025
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=82, name=cloudflare-ech.com

isi.org

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:49cd🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:c025🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.73.205Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.192.37🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScarter.ns.cloudflare.com ⭐
NScollins.ns.cloudflare.com
MXisi-org.mail.protection.outlook.com ⭐
TXTduo_sso_verification=5pF9fUYrA6Ot0NtWPiWzy442knAOxt5XHfQ04p8rHysoyJWKfp7WWsbp...
TXTgoogle-site-verification=7_Yis1qUmS5yI6jcq1LyJhr_RxGtofM-9ag7hqeH6So
TXTgoogle-site-verification=FBQFaOssJg1UbrMDJUEggj1Fsobun7KkkRHd5VhuRQQ
TXTpardot993092=828a37a961c4484afc64c1b8fb3c730643632871e8ea3660503fc5a094dda7a8
TXTv=spf1 mx ip4:173.62.172.122/32 ip4:104.210.1.206/32 include:_spf1.mailgun.or...
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.73.205, 172.67.192.37
IPv6 hints2606:4700:3031::6815:49cd, 2606:4700:3035::ac43:c025
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=82, name=cloudflare-ech.com
SOAcarter.ns.cloudflare.comdns@cloudflare.com serial=2411940100
WOT: SAFE (62/100)
rank #89608 globally
rank #8986 in the tld
WOT: SAFE (70/100)
📈 Tranco rank: #312,272

PTR for

134.171.12.76.in-addr.arpa

MX for

isibooks.org

Previously MX for

mail2.isi.org

Same first word

mail2.mil.ru
mail2.kinghost.net
mail2.mobi
mail2.eu
mail2.iki.fi
mail2.you
mail2.no-ip.org
mail2.dev
mail2.cloudapp.net
mail2.cz
mail2.me
mail2.hu
mail2.ph
mail2.ca
mail2.de
mail2.nhs.uk
mail2.im
mail2.df.gov.br
mail2.myfritz.net
mail2.com
mail2.dyndns.org
mail2.la
mail2.cloudaccess.net
mail2.email
mail2.duckdns.org
mail2.ru
mail2.net
mail2.gouv.ci
mail2.se
mail2.us
mail2.nl
mail2.in
mail2.ch
mail2.fi
mail2.xyz
mail2.name
mail2.dk
mail2.gouv.ml
mail2.cn
mail2.app
mail2.sakura.ne.jp
mail2.cc
mail2.co
mail2.kapsi.fi
mail2.gov.pt
mail2.be
mail2.est.pr
mail2.ras.ru
mail2.altervista.org

Similar names

2mail.ro
2mail.co.uk
2mail.org
2mail.dk
2mail.serveftp.com
mi2la.de
alim2.com
mali2.com
2mail.pl
2mail.ru
2mail.space
2mail.com
2mail.net
2mail.com.ua
2mail.eu
2mail.pro
2mail.at
2mail.nl
2mail.im
ml2ai.com
2mail.co
2mail.de
2mila.it
2mail.fr
2mail.online
2mail.ca
2mila.com
mila2.com
2mail.co.za
2mail.ch
a2mil.com

DNS History

17 records (4 active, 13 former)

2008201020122014201620182020202220242026MXmail2.isi.orgA104.21.73.205172.67.192.372606:4700:3031::6815:49cd2606:4700:3035::ac43:c025188.114.96.0188.114.96.4188.114.97.0188.114.97.42606:4700:3032::ac43:c0252606:4700:3036::6815:49cd2a06:98c1:3120::2a06:98c1:3120::42a06:98c1:3121::2a06:98c1:3121::465.36.174.23476.12.171.134
○MXmail2.isi.org2015-06-09 → 2016-03-30 · 5 obs
○ 2007-08-14 15:58:18
● 2015-06-09 15:24:50
● 2016-03-30 04:08:52
○ 2016-09-12 23:32:22
○ 2026-08-14 09:45:44
●A104.21.73.2052026-02-20 → 2026-08-14 · 10 obs
○ 2016-09-12 23:32:22
● 2026-02-20 01:34:08
● 2026-02-28 03:41:16
○ 2026-03-05 21:49:00
● 2026-04-01 05:08:40
● 2026-05-07 16:03:50
○ 2026-06-21 13:34:48
● 2026-06-21 14:06:14
○ 2026-07-21 11:21:42
● 2026-08-14 09:45:44
●A172.67.192.372026-02-20 → 2026-08-14 · 10 obs
○ 2016-09-12 23:32:22
● 2026-02-20 01:34:08
● 2026-02-28 03:41:16
○ 2026-03-05 21:49:00
● 2026-04-01 05:08:40
● 2026-05-07 16:03:50
○ 2026-06-21 13:34:48
● 2026-06-21 14:06:14
○ 2026-07-21 11:21:42
● 2026-08-14 09:45:44
○A188.114.96.02026-03-05 → 2026-07-21 · 5 obs
○ 2026-02-28 03:41:16
● 2026-03-05 21:49:00
○ 2026-04-01 05:08:40
● 2026-07-21 11:21:42
○ 2026-08-14 09:45:44
○A188.114.96.42026-06-21 → 2026-06-21 · 4 obs
○ 2026-05-07 16:03:50
● 2026-06-21 13:34:48
○ 2026-06-21 14:06:14
○ 2026-08-14 09:45:44
○A188.114.97.02026-03-05 → 2026-07-21 · 5 obs
○ 2026-02-28 03:41:16
● 2026-03-05 21:49:00
○ 2026-04-01 05:08:40
● 2026-07-21 11:21:42
○ 2026-08-14 09:45:44
○A188.114.97.42026-06-21 → 2026-06-21 · 4 obs
○ 2026-05-07 16:03:50
● 2026-06-21 13:34:48
○ 2026-06-21 14:06:14
○ 2026-08-14 09:45:44
●A2606:4700:3031::6815:49cd2026-06-21 → 2026-08-14 · 4 obs
○ 2026-06-21 13:34:48
● 2026-06-21 14:06:14
○ 2026-07-21 11:21:42
● 2026-08-14 09:45:44
○A2606:4700:3032::ac43:c0252026-02-20 → 2026-05-07 · 8 obs
○ 2016-09-12 23:32:22
● 2026-02-20 01:34:08
● 2026-02-28 03:41:16
○ 2026-03-05 21:49:00
● 2026-04-01 05:08:40
● 2026-05-07 16:03:50
○ 2026-06-21 13:34:48
○ 2026-08-14 09:45:44
●A2606:4700:3035::ac43:c0252026-06-21 → 2026-08-14 · 4 obs
○ 2026-06-21 13:34:48
● 2026-06-21 14:06:14
○ 2026-07-21 11:21:42
● 2026-08-14 09:45:44
○A2606:4700:3036::6815:49cd2026-02-20 → 2026-05-07 · 8 obs
○ 2016-09-12 23:32:22
● 2026-02-20 01:34:08
● 2026-02-28 03:41:16
○ 2026-03-05 21:49:00
● 2026-04-01 05:08:40
● 2026-05-07 16:03:50
○ 2026-06-21 13:34:48
○ 2026-08-14 09:45:44
○A2a06:98c1:3120::2026-03-05 → 2026-07-21 · 5 obs
○ 2026-02-28 03:41:16
● 2026-03-05 21:49:00
○ 2026-04-01 05:08:40
● 2026-07-21 11:21:42
○ 2026-08-14 09:45:44
○A2a06:98c1:3120::42026-06-21 → 2026-06-21 · 4 obs
○ 2026-05-07 16:03:50
● 2026-06-21 13:34:48
○ 2026-06-21 14:06:14
○ 2026-08-14 09:45:44
○A2a06:98c1:3121::2026-03-05 → 2026-07-21 · 5 obs
○ 2026-02-28 03:41:16
● 2026-03-05 21:49:00
○ 2026-04-01 05:08:40
● 2026-07-21 11:21:42
○ 2026-08-14 09:45:44
○A2a06:98c1:3121::42026-06-21 → 2026-06-21 · 4 obs
○ 2026-05-07 16:03:50
● 2026-06-21 13:34:48
○ 2026-06-21 14:06:14
○ 2026-08-14 09:45:44
○A65.36.174.2342007-08-14 → 2007-08-14 · 3 obs
● 2007-08-14 15:58:18
○ 2015-06-09 15:24:50
○ 2026-08-14 09:45:44
○A76.12.171.1342015-06-09 → 2016-09-12 · 5 obs
○ 2007-08-14 15:58:18
● 2015-06-09 15:24:50
● 2016-09-12 23:32:22
○ 2026-02-20 01:34:08
○ 2026-08-14 09:45:44

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org-
isi.orgcarter.ns.cloudflare.com, collins.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.38.226

NS records: carter.ns.cloudflare.com, collins.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for isi.org (unsigned zone)

⏱️ Timing

Total: 279ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.192.37, 104.21.73.205
AAAA22606:4700:3035::ac43:c025, 2606:4700:3031::6815:49cd
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

Mail Server Role

mail2.isi.org is a mail server for isibooks.org.

IP Addresses

mail2.isi.org points to the four IP addresses 104.21.73.205, 172.67.192.37, 2606:4700:3031::6815:49cd and 2606:4700:3035::ac43:c025.

Among the host names that share IP numbers with mail2.isi.org are christianfriendsfoundation.org, abe.ai, www.mikeyungnewyork.com and two others.