AS13953 — SVCC-EDU - Sauk Valley Community College

AS13953 announces 1 IPv4 prefixes covering 4,096 addresses and 1 IPv6 prefixes.

About this network

Every address sampled came back named as a DHCP lease, numbered by the two octets that identify it.

What it's used for

• A community college's network. 4,096 addresses in a single IPv4 prefix, one IPv6 prefix, and one observed BGP neighbour.

Notable

• The block is 108.59.144.0/20, netname SVCC-EDU, registered to the college.
• All three sampled addresses returned a name, of the form dhcp-148-000.svcc.edu.
• Each name pads the final octet to three digits, so dhcp-151-255 and dhcp-148-000 line up.
• The IPv6 prefix is 2620:103:4000::/44.

Interesting

• A whole /20 named as one DHCP pool is a campus where the addresses belong to people rather than to services. Laptops and phones arrive, take a lease, and leave, and the name describes the slot rather than whatever is currently sitting in it.
• Padding the octet to three digits is what makes the names sort into address order in any tool that handles them as text, which matters when the list is read by staff chasing a machine on a network with thousands of transient devices.
• Four thousand addresses for one college is generous by current standards and unremarkable for the era the block came from. Institutions that took space early kept it, and campus networks are one of the few places where every device still gets a public address.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 108.59.144.0/20
• 2620:103:4000::/44

Upstream networks

• AS33491 Comcast Cable Communications, LLC

Adjacent networks

• AS33491 Comcast Cable Communications, LLC

Routing security

• RPKI: 2 valid, 0 invalid and 0 not-found announcements; 2 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 10 route objects.
• Listed in as-sets: AS-BTN-CUSTOMERS, AS-COMCAST-EDIA, AS-ICN-CUSTOMERS, AS6325:AS-ICN-HIGHERED.