как по IP адресу (81.7.93.138)-отправить сообщение или узнать инфу....

IP 81.7.93.138 (81-7-93-138.static.zebra.lt)
GEOIP info
country_code: LT
country_code3: LTU
country_name: Lithuania
region: 59
city: Marijampole
latitude: 54.5667
longitude: 23.35
continent_code: EU
WHOIS info
Страна LTLithuania (Литва)

% Joint Whois - whois.lacnic.net
% This server accepts single ASN, IPv4 or IPv6 queries

% RIPENCC resource: whois.ripe.net

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See http://www.ripe.net/db/support/db-terms-conditions.pdf

% Note: this output has been filtered.
% To receive output for a database update, use the "-B" flag.

% Information related to '81.7.88.0 - 81.7.96.255'

inetnum: 81.7.88.0 - 81.7.96.255
netname: LIETUVOS-TELEKOMAS
descr: PROVIDER
descr: Joint Stock Company Lietuvos Telekomas
descr: local, long distance and international telecommunications
descr: services carrier
descr: LOCAL REGISTRY
country: LT
admin-c: LTIN2-RIPE
tech-c: LTIN2-RIPE
remarks: rev-srv: ns1.telecom.lt
remarks: rev-srv: ns2.telecom.lt
status: ASSIGNED PA
mnt-by: TELECOMLT-MNT
source: RIPE # Filtered
remarks: rev-srv attribute deprecated by RIPE NCC on 02/09/2009

role: Lithuanian Telecom IP NOC
address: TEO LT, AB
address: Savanoriu 28
address: LT-03501 Vilnius
address: Lithuania
remarks: *******************************************************
remarks: * ABUSE CONTACT: abuse@zebra.lt in case of violation, *
remarks: * illegal activity, scans, probes, spam, etc. *
remarks: *******************************************************
mnt-by: TELECOMLT-MNT
admin-c: LTIN1-RIPE
tech-c: LTIN1-RIPE
nic-hdl: LTIN2-RIPE
source: RIPE # Filtered
abuse-mailbox: abuse@zebra.lt

% Information related to '81.7.88.0/21AS8764'

route: 81.7.88.0/21
descr: LT-TELEKOMAS
origin: AS8764
mnt-by: AS8764-MNT
source: RIPE # Filtered

вводишь IP в

https://www.nic.ru/whois/?wi=1

и узнаёшь ))
ты увидишь только диапозон IP адресов выделенных провайдеру

Расположение: LITHUANIA, Vilnius