42427 MIMECAST-UK, GB
Adjacency: 3 Upstream: 3 Downstream: 0
Upstream Adjacent AS list
AS2914 NTT-LTD-2914, US
AS3356 LEVEL3, US
AS6461 ZAYO-6461, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 20005 AS42427 ORIGIN Originate: 3072 /20.42 Transit: 0 /0.00 MIMECAST-UK, GB
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 16757 AS42427 MIMECAST-UK, GB 12 4 2 10 2 16.67% Prefix AS Path Aggregation Suggestion 91.220.42.0/24 2914 42427 170.10.142.0/24 2914 42427 185.58.84.0/23 57866 3356 42427 + Announce - aggregate of 185.58.84.0/24 (57866 3356 42427) and 185.58.85.0/24 (57866 3356 42427) 185.58.84.0/24 57866 3356 42427 - Withdrawn - aggregated with 185.58.85.0/24 (57866 3356 42427) 185.58.85.0/24 57866 3356 42427 - Withdrawn - aggregated with 185.58.84.0/24 (57866 3356 42427) 185.58.86.0/23 2914 42427 + Announce - aggregate of 185.58.86.0/24 (2914 42427) and 185.58.87.0/24 (2914 42427) 185.58.86.0/24 2914 42427 - Withdrawn - aggregated with 185.58.87.0/24 (2914 42427) 185.58.87.0/24 2914 42427 - Withdrawn - aggregated with 185.58.86.0/24 (2914 42427) 193.7.204.0/24 57866 3356 42427 193.7.205.0/24 2914 42427 195.130.217.0/24 57866 3356 42427 207.82.80.0/24 57866 3356 42427 216.35.243.0/24 57866 3356 42427 216.35.244.0/24 57866 3356 42427
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS42427 10 More Specifics 12 Total Advertisements MIMECAST-UK, GB
147.28.36.0/24 147.28.32.0/20
185.58.84.0/24 185.58.84.0/22
185.58.85.0/24 185.58.84.0/22
185.58.86.0/24 185.58.84.0/22
185.58.87.0/24 185.58.84.0/22
193.7.204.0/24 193.7.204.0/22
193.7.205.0/24 193.7.204.0/22
207.82.80.0/24 207.82.0.0/16
216.35.243.0/24 216.32.0.0/14
216.35.244.0/24 216.32.0.0/14
41.74.203.0/24 41.74.192.0/20
170.10.142.0/24 170.10.128.0/19
216.145.218.0/24 216.145.208.0/20
216.145.222.0/24 216.145.208.0/20
Prefixes added and withdrawn by this origin AS in the past 7 days.
- 41.74.203.0/24 Withdrawn
- 170.10.142.0/24 Withdrawn
- 216.145.218.0/24 Withdrawn
- 216.145.222.0/24 Withdrawn
whois: 402603
IANA has recorded AS42427 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS42427\n % This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html
% Note: this output has been filtered.
% Information related to 'AS42383 - AS42959'
as-block: AS42383 - AS42959
descr: RIPE NCC ASN block
remarks: These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by: RIPE-NCC-HM-MNT
created: 2021-08-19T06:50:17Z
last-modified: 2021-08-19T06:50:17Z
source: RIPE
% Information related to 'AS42427'
% Abuse contact for 'AS42427' is 'abuse@mimecast.com'
aut-num: AS42427
as-name: MIMECAST-UK
org: ORG-MSL21-RIPE
import: from AS2914 accept ANY
export: to AS2914 announce AS42427
import: from AS1290 accept ANY
export: to AS1290 announce AS42427
import: from AS3910 accept ANY
export: to AS3910 announce AS42427
admin-c: CGRD-RIPE
tech-c: CGRD-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: MCSL-RIPE-MNT
created: 2017-05-05T13:56:06Z
last-modified: 2019-07-08T07:23:24Z
source: RIPE
organisation: ORG-MSL21-RIPE
org-name: Mimecast Services Limited
country: GB
reg-nr: 04901524
org-type: LIR
address: 1 Finsbury Avenue
address: EC2M 2PF
address: London
address: UNITED KINGDOM
phone: +442078478700
mnt-ref: RIPE-NCC-HM-MNT
mnt-ref: MCSL-RIPE-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: MCSL-RIPE-MNT
abuse-c: CGRD-RIPE
created: 2014-05-05T13:57:11Z
last-modified: 2026-05-13T07:04:23Z
source: RIPE # Filtered
admin-c: CGRD-RIPE
role: Mimecast - CoreGrid
address: 1 Finsbury Avenue
address: London
address: EC2M 2PF
address: United Kingdom
phone: +44 (0)207 847 8700
admin-c: MCNO2003-RIPE
tech-c: MCNO2003-RIPE
remarks: ---------------------------------
abuse-mailbox: abuse@mimecast.com
remarks: ---------------------------------
nic-hdl: CGRD-RIPE
mnt-by: MCSL-RIPE-MNT
created: 2014-05-20T16:18:44Z
last-modified: 2023-09-28T13:31:26Z
source: RIPE # Filtered
% This query was served by the RIPE Database Query Service version 1.122.1 (BUSA)