AS556 USC/Information Sciences Institute

AS556 is operated by USC/Information Sciences Institute and registered with ARIN (US) since 1989-12-19.

It is not announcing any prefixes right now.

Run the full network report BGP lookup WHOIS PeeringDB lookup

Name	USC/Information Sciences Institute
Registry handle	CALREN-AS
Registry (RIR)	ARIN
Country	United States (US)
Delegated on	1989-12-19
Prefixes (IPv4 / IPv6)	0 / 0

Routing health

AS556 is not announcing anything right now.

For every check with the fix (IRR route objects, the RPKI state of each route, reverse DNS and the registration), run the full network report.

More about AS556

Network report: routing, RPKI, IRR, registration and PeeringDB, with what to fix
BGP lookup: prefixes and neighbours
WHOIS / RDAP: the registry record and abuse contact
RPKI check for a prefix and origin

← AS555 AS557 →

Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-13 18:41 UTC. The country is where the AS number was registered, not necessarily where the network operates.