Report for 208638

Name

MIMECAST-IT-CORP, GB

AS Adjacency Report

In the context of this report "Upstream" indicates that there is an adjacent AS that lines between the BGP table collection point (in this case at AS2.0) and the specified AS. Similarly, "Downstream" refers to an adjacent AS that lies beyond the specified AS. This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.

208638 MIMECAST-IT-CORP, GB

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS174           COGENT-174 - Cogent Communications, LLC, US
    AS8220          COLT COLT Technology Services Group Limited, GB

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
55745 AS208638       ORIGIN  Originate:        512 /23.00  Transit:          0 /0.00  MIMECAST-IT-CORP, 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       %
65103 AS208638      MIMECAST-IT-CORP, GB                               2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  45.91.16.0/24        4777 2516 174 208638   
  45.91.17.0/24        4777 2516 8220 208638   

Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.

AS208638   2 More Specifics   2 Total Advertisements   MIMECAST-IT-CORP, GB
    45.91.16.0/24                 45.91.16.0/22
    45.91.17.0/24                 45.91.16.0/22

Whois Entry

whois: 402332

IANA has recorded AS208638 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS208638\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 'AS208189 - AS214345'
             
             as-block:       AS208189 - AS214345
             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:        2026-02-12T14:40:05Z
             last-modified:  2026-02-12T14:40:05Z
             source:         RIPE
             
             % Information related to 'AS208638'
             
             % Abuse contact for 'AS208638' is 'it-provisioning@mimecast.com'
             
             aut-num:        AS208638
             as-name:        mimecast-it-corp
             org:            ORG-MSL44-RIPE
             import:         from AS174 accept ANY
             export:         to AS174 announce AS208638
             import:         from AS49425 accept ANY
             export:         to AS49425 announce AS208638
             export:         to AS7545 announce AS208638
             import:         from AS7545 accept ANY
             import:         from AS36086 accept ANY
             export:         to AS36086 announce AS208638
             import:         from AS8220 accept ANY
             export:         to AS8220 announce AS208638
             import:         from AS327782 accept ANY
             export:         to AS327782 announce AS208638
             import:         from AS328317 accept ANY
             export:         to AS328317 announce AS208638
             import:         from AS1221 accept ANY
             export:         to AS1221 announce AS208638
             admin-c:        SM36014-RIPE
             tech-c:         SM36014-RIPE
             status:         ASSIGNED
             mnt-by:         RIPE-NCC-END-MNT
             mnt-by:         mnt-uk-mimecast-it-1
             created:        2019-07-01T09:11:07Z
             last-modified:  2024-02-02T00:06:47Z
             source:         RIPE
             
             organisation:   ORG-MSL44-RIPE
             org-name:       Mimecast Services Limited
             country:        GB
             org-type:       LIR
             address:        1 Finsbury Avenue
             address:        EC2M 2PF
             address:        London
             address:        UNITED KINGDOM
             phone:          +442078478700
             admin-c:        SM36014-RIPE
             tech-c:         SM36014-RIPE
             abuse-c:        AR53361-RIPE
             mnt-ref:        mnt-uk-mimecast-it-1
             mnt-by:         RIPE-NCC-HM-MNT
             mnt-by:         mnt-uk-mimecast-it-1
             created:        2019-06-20T11:35:57Z
             last-modified:  2021-05-20T17:27:19Z
             source:         RIPE # Filtered
             
             %ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
             %
             % Queries from your IP address have passed the daily limit of controlled objects.
             % Access from your host has been temporarily denied.
             % For more information, see
             % https://docs.db.ripe.net/FAQ/#why-did-i-receive-an-error-201-access-denied
             
             % This query was served by the RIPE Database Query Service version 1.121.2 (BUSA)