133.91.136.206

Basic Information

Network
CHUO-U Chuo University (JP)
Routing
133.91.0.0/16 via AS11537 , AS2907 , AS23623
Protocols
993/IMAPS, 465/SMTP, 995/POP3S, 25/SMTP, 110/POP3, 143/IMAP, 53/DNS, 587/SMTP
Tags
pop3 dns pop3s smtp imap imaps

25/SMTP


Details

Banner Grab and StartTLS Initiation

Server
Postfix
Banner
220 mail.coop.chuo-u.ac.jp ESMTP Postfix
EHLO
250-mail.coop.chuo-u.ac.jp
250-PIPELINING
250-SIZE
250-ETRN
250-STARTTLS
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
STARTTLS
220 2.0.0 Ready to start TLS

TLS Handshake

Version
TLSv1.2
Cipher Suite
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xC02F)

Certificate Chain

f5dab43f71f57df3ae29b639c4e2a3ef13285abbe9b5c16b04639b525d2ccbcb
C=JP, ST=Tokyo, L=Hachioji, O=Chuo University Cooperative, CN=*.coop.chuo-u.ac.jp
C=JP, ST=Tokyo, L=Hachioji, O=Chuo University Cooperative, CN=*.coop.chuo-u.ac.jp

465/SMTP


Details

Banner Grab

Banner
220 mail.coop.chuo-u.ac.jp ESMTP Postfix

TLS Handshake

Version
TLSv1.2
Cipher Suite
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xC02F)

Certificate Chain

f5dab43f71f57df3ae29b639c4e2a3ef13285abbe9b5c16b04639b525d2ccbcb
C=JP, ST=Tokyo, L=Hachioji, O=Chuo University Cooperative, CN=*.coop.chuo-u.ac.jp
C=JP, ST=Tokyo, L=Hachioji, O=Chuo University Cooperative, CN=*.coop.chuo-u.ac.jp

587/SMTP


Details

Banner Grab and StartTLS Initiation

Server
Postfix
Banner
220 mail.coop.chuo-u.ac.jp ESMTP Postfix
EHLO
250-mail.coop.chuo-u.ac.jp
250-PIPELINING
250-SIZE
250-ETRN
250-STARTTLS
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
STARTTLS
220 2.0.0 Ready to start TLS

TLS Handshake

Version
TLSv1.2
Cipher Suite
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xC02F)

Certificate Chain

f5dab43f71f57df3ae29b639c4e2a3ef13285abbe9b5c16b04639b525d2ccbcb
C=JP, ST=Tokyo, L=Hachioji, O=Chuo University Cooperative, CN=*.coop.chuo-u.ac.jp
C=JP, ST=Tokyo, L=Hachioji, O=Chuo University Cooperative, CN=*.coop.chuo-u.ac.jp

53/DNS


Details

Open Resolver Query

Open Resolver
False

110/POP3


Details

Banner Grab and StartTLS Initiation

Server
Dovecot
Banner
+OK Dovecot ready.
STARTTLS
+OK Begin TLS negotiation now.

TLS Handshake

Version
TLSv1.2
Cipher Suite
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xC02F)

Certificate Chain

f5dab43f71f57df3ae29b639c4e2a3ef13285abbe9b5c16b04639b525d2ccbcb
C=JP, ST=Tokyo, L=Hachioji, O=Chuo University Cooperative, CN=*.coop.chuo-u.ac.jp
C=JP, ST=Tokyo, L=Hachioji, O=Chuo University Cooperative, CN=*.coop.chuo-u.ac.jp

143/IMAP


Details

Banner Grab and StartTLS Initiation

Server
Dovecot
Banner
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS AUTH=PLAIN AUTH=LOGIN] Dovecot ready.
STARTTLS
a001 OK Begin TLS negotiation now.

TLS Handshake

Version
TLSv1.2
Cipher Suite
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xC02F)

Certificate Chain

f5dab43f71f57df3ae29b639c4e2a3ef13285abbe9b5c16b04639b525d2ccbcb
C=JP, ST=Tokyo, L=Hachioji, O=Chuo University Cooperative, CN=*.coop.chuo-u.ac.jp
C=JP, ST=Tokyo, L=Hachioji, O=Chuo University Cooperative, CN=*.coop.chuo-u.ac.jp

993/IMAPS


Details

Banner Grab

Banner
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN AUTH=LOGIN] Dovecot ready.

TLS Handshake

Version
TLSv1.2
Cipher Suite
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xC02F)

Certificate Chain

f5dab43f71f57df3ae29b639c4e2a3ef13285abbe9b5c16b04639b525d2ccbcb
C=JP, ST=Tokyo, L=Hachioji, O=Chuo University Cooperative, CN=*.coop.chuo-u.ac.jp
C=JP, ST=Tokyo, L=Hachioji, O=Chuo University Cooperative, CN=*.coop.chuo-u.ac.jp

995/POP3S


Details

Banner Grab

Banner
+OK Dovecot ready.

TLS Handshake

Version
TLSv1.2
Cipher Suite
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xC02F)

Certificate Chain

f5dab43f71f57df3ae29b639c4e2a3ef13285abbe9b5c16b04639b525d2ccbcb
C=JP, ST=Tokyo, L=Hachioji, O=Chuo University Cooperative, CN=*.coop.chuo-u.ac.jp
C=JP, ST=Tokyo, L=Hachioji, O=Chuo University Cooperative, CN=*.coop.chuo-u.ac.jp

Geographic Location

Country
Japan (JP)
Lat/Long
35.6897, 139.6895
Timezone
Asia/Tokyo