HomePrefix Lookup143.58.0.0/18

143.58.0.0/18

🇺🇸
IPv4ARINallocatedAS19977MBRML-AS - Mayer Brown LLPNo ROA
CIDR
143.58.0.0/18
IP Version
IPv4
Addresses
16.3K
Mask
/18 (255.255.192.0)
Country
🇺🇸 United States
City
Chicago (Loop)
RIR
ARIN
Status
allocated
Allocated
3/26/1990

Announced BGP Routes

0 of 0 routes
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
This prefix is not currently announced in BGP. See covering prefix below.

Covering Prefix

20 less-specific announcements
PrefixOrigin ASRPKIIRRLast Seen
143.58.4.0/22AS19977MBRML-AS - Mayer Brown LLPNo ROA—5/31/2026
143.58.0.0/22AS19977MBRML-AS - Mayer Brown LLPNo ROA—5/31/2026
143.58.8.0/22AS29120ROWEMAW-AS Mayer Brown International LLPNo ROA—5/31/2026
143.58.12.0/22AS29120ROWEMAW-AS Mayer Brown International LLPNo ROA—5/31/2026
143.58.3.0/24AS19977MBRML-AS - Mayer Brown LLPNo ROA—5/31/2026
143.58.1.0/24AS19977MBRML-AS - Mayer Brown LLPNo ROA—5/31/2026
143.58.4.0/24AS19977MBRML-AS - Mayer Brown LLPNo ROA—5/31/2026
143.58.5.0/24AS19977MBRML-AS - Mayer Brown LLPNo ROA—5/31/2026
143.58.6.0/24AS19977MBRML-AS - Mayer Brown LLPNo ROA—5/31/2026
143.58.7.0/24AS19977MBRML-AS - Mayer Brown LLPNo ROA—5/31/2026
143.58.0.0/24AS19977MBRML-AS - Mayer Brown LLPNo ROA—5/31/2026
143.58.2.0/24AS19977MBRML-AS - Mayer Brown LLPNo ROA—5/31/2026
143.58.9.0/24AS29120ROWEMAW-AS Mayer Brown International LLPNo ROA—5/31/2026
143.58.10.0/24AS29120ROWEMAW-AS Mayer Brown International LLPNo ROA—5/31/2026
143.58.11.0/24AS29120ROWEMAW-AS Mayer Brown International LLPNo ROA—5/31/2026
143.58.15.0/24AS29120ROWEMAW-AS Mayer Brown International LLPNo ROA—5/31/2026
143.58.12.0/24AS29120ROWEMAW-AS Mayer Brown International LLPNo ROA—5/31/2026
143.58.13.0/24AS29120ROWEMAW-AS Mayer Brown International LLPNo ROA—5/31/2026
143.58.14.0/24AS29120ROWEMAW-AS Mayer Brown International LLPNo ROA—5/31/2026
143.58.8.0/24AS29120ROWEMAW-AS Mayer Brown International LLPNo ROA—5/31/2026
Origin ASN
AS19977
MBRML-AS - Mayer Brown LLP
Geolocation
Country🇺🇸United StatesUS
RegionIllinois
CityChicago (Loop)
Coordinates41.8808, -87.6361 ↗
API
Open
GEThttps://api.ipctl.io/v1/prefix/143.58.0.0/18

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/143.58.0.0/18" | jq
External Links
RIPEstat Hurricane Electric BGP