Home Prefix Lookup207.233.4.0/23

207.233.4.0/23 - CENIC (AS2152)

IPv4ARINannouncedAS2152CENIC-2152 - CENICNo ROA

CIDR

207.233.4.0/23

IP Version

IPv4

Addresses

512

Mask

/23 (255.255.254.0)

Country

🇺🇸 United States

City

Castroville

RIR

ARIN

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
207.233.4.0/23	AS2152 CENIC-2152 - CENIC	No ROA	-	2026-10-13

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
207.233.0.0/17	AS2152 CENIC-2152 - CENIC	No ROA	-	2026-10-13

Transfer History

Registry transfers of 207.233.4.0/23, blocks inside it, or blocks containing it.

207.233.0.0/17Transfer · 2024-07-08
California State University, Office of the Chancellor
🇺🇸 US ARIN
→
CENIC
🇺🇸 US ARIN

Date	Resource	From	To	Type
2024-07-08	207.233.0.0/17	California State University, Office of the Chancellor 🇺🇸 US ARIN	CENIC 🇺🇸 US ARIN	Transfer

Origin ASN

AS2152

CENIC-2152 - CENIC

Related Prefixes

Covering prefix

207.233.0.0/17AS2152

More prefixes of AS2152

All prefixes of AS2152 →

Geolocation

Country🇺🇸United StatesUS

RegionCalifornia

CityCastroville

Coordinates36.7545, -121.7650 ↗

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

GEThttps://api.ipctl.io/v1/prefix/207.233.4.0/23

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

curl -s "https://api.ipctl.io/v1/prefix/207.233.4.0/23" | jq

External Links

RIPEstat