Mimecast Services Limited
AS42427 is Mimecast Services Limited (mimecast.com). It announces 2,816 IPv4 addresses in 12 prefixes, and 2 IPv6 prefixes.
United Kingdom· RIPE· allocated 2017-05-05· business
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- United Kingdom2,048 · 72.73%
- United States768 · 27.27%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- MIMECAST-UK
- name
- Mimecast Services Limited
- org
- ORG-MSL21-RIPE
- org name
- Mimecast Services Limited
- org address
- 1 Finsbury Avenue, EC2M 2PF, London, UNITED KINGDOM
- org country
- GB
- country
- GB
- source
- ripe
- status
- ASSIGNED
- created
- 2017-05-05
- updated
- 2019-07-08
- maintainer
- RIPE-NCC-END-MNT|MCSL-RIPE-MNT
- abuse name
- Mimecast - CoreGrid
- abuse email
- abuse@mimecast.com
- abuse phone
- +44 (0)207 847 8700
- abuse kind
- role
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- None here
- None here
- None here
- None here
- None here
- None here
- Hosting IP1,02436.36%
- None here
- None here
- None here
- None here
- SMTP IP702.49%
- 0.50%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 91.220.42.0/24 | United Kingdom | valid | 17 | 2026-10-02 |
| 170.10.142.0/24also AS30031, AS33538, AS37235, AS39588 | United States | valid | 4 | 2026-10-02 |
| 185.58.84.0/24 | United Kingdom | valid | 17 | 2026-10-02 |
| 185.58.85.0/24 | United Kingdom | valid | 17 | 2026-10-02 |
| 185.58.86.0/24 | United Kingdom | valid | 17 | 2026-10-02 |
| 185.58.87.0/24 | United Kingdom | valid | 17 | 2026-10-02 |
| 193.7.204.0/24 | United Kingdom | valid | 17 | 2026-10-02 |
| 193.7.205.0/24 | United Kingdom | valid | 17 | 2026-10-02 |
| 195.130.217.0/24 | United Kingdom | valid | 17 | 2026-10-02 |
| 207.82.80.0/24 | United States | not found | 17 | 2026-10-02 |
| 216.35.243.0/24 | United States | not found | 17 | 2026-10-02 |
| 216.35.244.0/24 | United States | not found | 17 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2a02:5be0::/48 | United Kingdom | valid | 20 | 2026-10-02 |
| 2a02:5be0:1::/48 | United Kingdom | valid | 20 | 2026-10-02 |
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