AS11135 CROSS-DEVELOPMENT-MONTGOMERY

CROSS-DEVELOPMENT-MONTGOMERY is the routing identity of the Westland Bunker, a hardened colocation and disaster-recovery data centre at 550 Club Dr, Montgomery, Texas, north of Houston. The ARIN registrant is the property partnership, Cross Development/Montgomery LP, but every contact on the record — abuse, admin, NOC, tech — is @westlandbunker.com, which is what actually operates the network.

What it's used for

Colocation and managed hosting. RIS observes 8 IPv4 prefixes totalling roughly 3,840 addresses, no IPv6, and only 3 BGP neighbours. That is a customer-edge shape, not a carrier: the facility is carrier-neutral and multihomes to a handful of on-site providers rather than selling transit itself. Reverse DNS on the sampled addresses is exactly what a colo looks like from the outside — rscorp.westlandbunker.com on the operator's own 199.102.136.0/21, and tenant names such as ptr.truewater.com and www.texasliquids.com on the smaller blocks.

Notable

The prefix registrants are worth reading carefully, because at a glance they look scattered: TWTC-NETBLK-12 (Time Warner Telecom) on the 209.163.230.0/24 and .231.0/24, SUDDE (Suddenlink) on the two 173.219.x /24s, and direct ARIN reassignments on the 65.59.x and 66.193.x blocks. These are ordinary provider-assigned blocks from the carriers feeding the building, all ARIN, all US — the untidy-but-legitimate pattern of a facility that has accumulated address space from successive on-site transit providers, not the multi-RIR third-party registrant pattern of a leased-address broker.

Interesting

The building is a former 1982 nuclear fallout shelter, roughly 38,000 sq ft of data centre space some 55 feet underground, later fitted out as a Tier III facility.