AS10558 — BIOLA---BIOLA-UNIVERSITY
Network type: education
AS10558 announces 1 IPv4 prefixes covering 1,024 addresses and 0 IPv6 prefixes.
About this network
The campus ASN of Biola University, a private Christian university in La Mirada, California. The handle BIOLA---BIOLA-UNIVERSITY says it twice, leaving no ambiguity about the holder.
What it's used for
A single-campus higher-education network. RIS sees 6 announced IPv4 prefixes carrying 1,024 addresses, no IPv6, and two observed neighbours.
The six prefixes are less than they sound. They cover 199.19.144.0/22 worth of space, announced as two /23s plus four component /24s laid over the top: 199.19.144.0/23 and 199.19.146.0/23 alongside 199.19.144.0/24, 199.19.145.0/24, 199.19.146.0/24 and 199.19.147.0/24. That is a single contiguous /22 sliced up and announced at several lengths at once, which is why the address total is 1,024 rather than anything like six blocks' worth.
Two neighbours against a /22 is a small campus with a couple of upstreams. Nothing here suggests any provider or hosting role: the space serves the university's own staff, students and public-facing systems.
Notable
Announcing the same addresses at /22, /23 and /24 granularity is a deliberate pattern, usually done to steer inbound traffic across multiple transit links or to guard against a more-specific hijack of the block. It costs extra routing-table entries everywhere on the internet, which is why it is a choice rather than an accident.
The 199.19.144.0/22 block is legacy ARIN space, consistent with a university that has held the same allocation for decades.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 199.19.144.0/22
Upstream networks
Adjacent networks
Routing security
- RPKI: 6 valid, 0 invalid and 0 not-found announcements; 1 ROAs.
- ASPA: none published.
- IRR: 33% of announcements registered; 4 route objects.
- Listed in as-sets: AS-CCF, AS-CCF-TEST, AS-CHTR-SYNC, AS-HURRICANE, AS-RR-BIZ, AS-XO-B.
awaiting query
enter an AS number, IP address, or organisation name above