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
| Netblocks | 28 · 18,155 IPv4 addresses |
| Cluster ID | 214451001 |
| Registry | BGP |
| Owner jurisdiction | US-DE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 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