AS12239 — BLOOMINGTON-SD87

AS12239 announces 2 IPv4 prefixes covering 1,536 addresses and 0 IPv6 prefixes.

About this network

The network of a public school district in Bloomington, Illinois.

What it's used for

• School district connectivity. 1,536 addresses in two prefixes with one observed BGP neighbour.

Notable

• The larger block, 207.68.192.0/22, is registered to the district under the netname ILLINICLOUD — the shared computing consortium that Illinois school districts built to pool infrastructure none of them could fund alone.
• The other block is registered to Verizon Business under the netname FRONTIER-COMMUNICATIONS, and its reverse DNS answers under frontiernet.net.
• Those reverse names carry an opaque 32-character hexadecimal label between the address and the domain: 173-86-246-128.c39472bab5bc79e34b0b5dfd99d35697.ip.frontiernet.net, with a different string on every address.
• First seen in the routing data in April 2014.

Interesting

• A school district running its own AS is a decision about who to depend on. Two prefixes and one upstream is not a resilience play; it is a district that wanted its address space to survive changing providers, which for a public body on a procurement cycle is the more practical risk.
• The netname and the registrant on the second block disagree because the network changed hands and the record did not follow. Frontier bought a large piece of Verizon's wireline business, and both names survive in the same entry, one in the registrant field and one in the label.

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

Announced prefixes

• 173.86.246.0/23
• 207.68.192.0/22

Upstream networks

• AS30600 Metronet

Adjacent networks

• AS30600 Metronet