156.42.16.0/20 - Maricopa County Government (AS4211)
CIDR
156.42.16.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇺🇸 United States
City
Phoenix (Downtown Phoenix)
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
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| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 156.42.16.0/20 | AS4211 ASN-MARICOPA1 - Maricopa County Government | No ROA | - | 2026-10-11 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 156.42.0.0/16 | AS4211 ASN-MARICOPA1 - Maricopa County Government | No ROA | - | 2026-10-11 |
| 156.42.0.0/19 | AS203 CENTURYLINK-LEGACY-LVLT-203 - Level 3 Parent, LLC | No ROA | - | 2026-10-11 |
Related Prefixes
Geolocation
Learn more
- RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
- RPKI validatorCheck ROA coverage for any prefix or ASN
- What is BGP?How prefixes are announced and routed
- More-specific prefixesGlossary: covering and more-specific routes
- IPv4 transfers in the ARIN regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/156.42.16.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/156.42.16.0/20" | jq
External Links