Reverse DNS:

mxfront.stable.qloud-b.yandex.net

Whois record for 77.88.21.249

inetnum:        77.88.21.0 - 77.88.21.255
netname:        YANDEX-77-88-21
status:         ASSIGNED PA
country:        RU
descr:          Yandex enterprise network
admin-c:        YNDX1-RIPE
tech-c:         YNDX1-RIPE
remarks:        INFRA-AW
mnt-by:         YANDEX-MNT
created:        2007-09-24T16:18:59Z
last-modified:  2014-03-26T08:17:08Z
source:         RIPE

role:           Yandex LLC Network Operations
address:        Yandex LLC
address:        16, Leo Tolstoy St.
address:        119021
address:        Moscow
address:        Russian Federation
phone:          +7 495 739 7000
fax-no:         +7 495 739 7070
remarks:        trouble: ------------------------------------------------------
remarks:        trouble: Points of contact for Yandex LLC Network Operations
remarks:        trouble: ------------------------------------------------------
remarks:        trouble: Routing and peering issues: noc@yandex.net
remarks:        trouble: SPAM issues: abuse@yandex.ru
remarks:        trouble: Network security issues: abuse@yandex.ru
remarks:        trouble: Mail issues: postmaster@yandex.ru
remarks:        trouble: General information: info@yandex.ru
remarks:        trouble: ------------------------------------------------------
admin-c:        PGR777-RIPE
tech-c:         EM3673-RIPE
tech-c:         AUR2-RIPE
nic-hdl:        YNDX1-RIPE
mnt-by:         YANDEX-MNT
created:        2002-06-07T05:35:50Z
last-modified:  2018-08-03T07:15:46Z
source:         RIPE # Filtered
abuse-mailbox:  abuse@yandex.ru

route:          77.88.0.0/18
descr:          Yandex enterprise network
origin:         AS13238
mnt-by:         YANDEX-MNT
created:        2007-03-15T11:01:41Z
last-modified:  2007-03-15T11:01:41Z
source:         RIPE
e-mail:          abuse@yandex.ru