143.58.0.0/22
🇺🇸CIDR
143.58.0.0/22
IP Version
IPv4
Addresses
1K
Mask
/22 (255.255.252.0)
Country
🇺🇸 United States
City
Chicago (Loop)
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 143.58.0.0/22 | AS19977MBRML-AS - Mayer Brown LLP | No ROA | — | 5/31/2026 |
Covering Prefix
4 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 143.58.0.0/24 | AS19977MBRML-AS - Mayer Brown LLP | No ROA | — | 5/31/2026 |
| 143.58.1.0/24 | AS19977MBRML-AS - Mayer Brown LLP | No ROA | — | 5/31/2026 |
| 143.58.2.0/24 | AS19977MBRML-AS - Mayer Brown LLP | No ROA | — | 5/31/2026 |
| 143.58.3.0/24 | AS19977MBRML-AS - Mayer Brown LLP | No ROA | — | 5/31/2026 |
Origin ASN
AS19977
MBRML-AS - Mayer Brown LLP
Geolocation
API
Open https://api.ipctl.io/v1/prefix/143.58.0.0/22Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/143.58.0.0/22" | jq
External Links