AS19316 — QUADRANGLE

AS19316 announces 4 IPv4 prefixes covering 1,024 addresses and 0 IPv6 prefixes.

About this network

The AS handle QUADRANGLE is held by Quadrangle Development Corporation, a real estate development company based in Washington, D.C.

What it's used for

• The address space carries mixed registrant identities, including COGENT-A for Cogent Communications, BAWA-CCS-2 for Comcast Cable Communications, and RCN-BLK-2 for RCN.
• Reverse DNS entries for the RCN block resolve to static.rcncustomer.com, indicating the space supports customer static IP services.
• The AS announces 1024 IPv4 addresses across 4 prefixes with 4 observed neighbours, a ratio consistent with a small-scale access or leased space arrangement rather than a large transit provider.

Notable

• Registrants do not match the announcer; the prefixes are registered to Cogent Communications, LLC, Comcast Cable Communications, LLC, and RCN, suggesting the AS holds leased or allocated space from these providers.
• Quadrangle Development Corporation is a privately held, vertically integrated real estate development company specializing in commercial and multi-family properties in the Washington, D.C. metropolitan region.
• The inventory consists of four distinct /24 prefixes, each associated with a different upstream provider, reflecting a fragmented address allocation typical of corporate or enterprise networks leasing space from multiple ISPs.

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

Announced prefixes

• 38.100.18.0/24
• 38.124.159.0/24
• 50.144.151.0/24
• 207.172.149.0/24

Upstream networks

• AS174 Cogent Communications, LLC
• AS33657 Comcast Cable Communications, LLC
• AS6079 RCN
• AS701 Verizon Business

Adjacent networks

• AS174 Cogent Communications, LLC
• AS33657 Comcast Cable Communications, LLC
• AS6079 RCN
• AS701 Verizon Business

Routing security

• RPKI: 2 valid, 0 invalid and 2 not-found announcements; 2 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 1 route objects.
• Listed in as-sets: AS-COMCAST-EDIA, AS-RCN-CUSTOMER, AS-TMNET-PEERS, AS33957:AS-INFORELAY.