Data as of Nov 5, 2026
143.58.12.0/22
No anonymizer space · no proxy exits in 30 daysMayer Brown International LLP · space held by Mayer Brown LLP
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 143.58.12.0/24 since Sep 2016 | AS29120 | Business | Mayer Brown LLP | |
| 143.58.13.0/24 since Mar 2021 | AS29120 | Business | Mayer Brown LLP | |
| 143.58.14.0/24 since Jul 2020 | AS29120 | Business | Mayer Brown LLP | |
| 143.58.15.0/24 since Mar 2021 | AS29120 | Business | Mayer Brown LLP |
Network & registry
Origin network
AS29120
GB
- Name
- Mayer Brown International LLP
- Type
- Business
- Registered
- Jun 10, 2003
- Domain
- mayerbrown.com
- Industry
- Service
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Dec 2022
- Current origin since
- May 2023 · 3.5 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 143.
58. 0. 0/ 18 - Netname
- MBRM-NET
- Registrant
- Mayer Brown LLP
- Organization
- Mayer Brown LLP (MBRML)
- Org address
- 71 S. Wacker, Chicago, IL, 60606
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-143-58-0-0-1
- Parent
- NET-143-0-0-0-0
- Created
- Mar 26, 1990
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 26, 1990
- Status
- assigned
Report abuse
Abuse contact
- nobody@
example. com - Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN