MIMECAST NORTH AMERICA, INC.

Mimecast North America Inc
GLEIF verified
LEI
2138004ZQG195Z2UE928
Registered name
MIMECAST NORTH AMERICA, INC.
Jurisdiction
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks28 · 18,155 IPv4 addresses
Cluster ID214451001
RegistryBGP
Owner jurisdictionUS-DE
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 2138004ZQG195Z2UE928
Shared handles clustered on 9 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

6 weekly snapshots · JSON
28 -1 netblocks since 2026-07-05
2026-07-05 peak 30 2026-07-26

IP Ranges (28)

⬇ export CSV
CIDR Org name Registry Status Confidence
63.128.21.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
170.10.128.0/23 Mimecast North America Inc BGP ANNOUNCED ● high
170.10.130.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
170.10.131.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
170.10.132.0/23 Mimecast North America Inc BGP ANNOUNCED ● high
170.10.140.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
170.10.144.0/23 Mimecast North America Inc BGP ANNOUNCED ● high
170.10.146.0/23 Mimecast North America Inc BGP ANNOUNCED ● high
170.10.150.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
170.10.151.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
170.10.152.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
170.10.153.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
170.10.156.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
170.10.157.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
205.139.110.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
205.139.111.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
207.211.30.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
216.145.219.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
216.205.24.0/24 Mimecast North America Inc BGP ANNOUNCED ● high
2620:134:6000::/48 Mimecast North America Inc BGP ANNOUNCED ● high
2620:134:6001::/48 Mimecast North America Inc BGP ANNOUNCED ● high
2620:134:6002::/48 Mimecast North America Inc BGP ANNOUNCED ● high
2620:134:6006::/48 Mimecast North America Inc BGP ANNOUNCED ● high
2620:134:6007::/48 Mimecast North America Inc BGP ANNOUNCED ● high
2620:134:6008::/48 Mimecast North America Inc BGP ANNOUNCED ● high
2620:134:6009::/48 Mimecast North America Inc BGP ANNOUNCED ● high
170.10.128.0/19 Mimecast North America Inc ARIN DIRECT ALLOCATION ● low
216.145.208.0/20 Mimecast North America Inc ARIN DIRECT ALLOCATION ● low

Domains hosted in this network

what's this?

Network trust

what's this?
RPKI hygiene: C how networks compare →
75.0% of checked blocks have valid RPKI ROA coverage (21 of 28)
No discrepancies found among checked blocks.

NIC Handles

AS30031 AS33538 DAVIS2734-ARIN DAVIS2734-ARIN MIMEC-ARIN MIMEC-ARIN MIMEC1-ARIN MNA-95 SEVCI-ARIN