This IP range is sending spam for learningpro360.com, which belongs to P2P Hub, an operator of business training seminars/webinars. P2P Hub appears not to be using that name at the moment, probably to evade detection.
SENDING IPs:
178.18.240.2 sha2.learningpro360.com
178.18.240.3 sha3.learningpro360.com
178.18.240.4 sha4.learningpro360.com
178.18.240.5 sha5.learningpro360.com
178.18.240.6 sha6.learningpro360.com
SPAM SAMPLE:
Received: from sha#.learningpro360.com (sha#.learningpro360.com [178.18.240.##])
Date: Sun, 6 Mar 2022 17:##:## +0800
From: «Claimable Training» <info@learningpro360.com>
Reply-To: training@learningpro360.com
Subject: <x>
<snip>
Respected Madam/Sir,
We are pleased to extend an invitation for you to join our course.
<snip>
Skills Network Training & Consultancy
Contact Person: Ms.Faze
Mob: 011-26253455
Email 1: skills.hrdcorp@gmail.com
Email 2: skills.hrdcorp@outlook.com
<snip>
WHOIS:
% Information related to ‘178.18.240.0 — 178.18.247.255’
% Abuse contact for ‘178.18.240.0 — 178.18.247.255’ is ‘abuse@contabo.de’
inetnum: 178.18.240.0 — 178.18.247.255
netname: CONTABO
country: DE
admin-c: MH7476-RIPE
tech-c: MH7476-RIPE
status: ASSIGNED PA
mnt-by: MNT-CONTABO
created: 2021-04-12T19:09:28Z
last-modified: 2021-04-12T19:09:28Z
source: RIPE
person: Wilhelm Zwalina
address: Contabo GmbH
address: Aschauer Str. 32a
address: 81549 Muenchen
phone: +49 89 21268372
fax-no: +49 89 21665862
nic-hdl: MH7476-RIPE
mnt-by: MNT-CONTABO
mnt-by: MNT-GIGA-HOSTING
created: 2010-01-04T10:41:37Z
last-modified: 2020-04-24T16:09:30Z
source: RIPE
% Information related to ‘178.18.240.0/21AS51167’
route: 178.18.240.0/21
origin: AS51167
mnt-by: MNT-CONTABO
created: 2021-04-12T17:10:52Z
last-modified: 2021-04-12T17:10:52Z
source: RIPE