asn.dev

Autonomous system

AS19316 QUADRANGLE

Unclassified ARIN

IPv4 addresses 1.02K 4 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 4 0 downstream
Flagged prefixes 0 none

Summary

Quadrangle Development Corporation

United States of America · AI-generated

business real-estate leased

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. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

4 upstream, 0 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS174Cogent Communications, LLC111
AS33657Comcast Cable Communications, LLC61
AS6079RCN58
AS701Verizon Business1

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 4 prefixes · 1.02K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America4

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS19316
Registry name
QUADRANGLE
Registrant
Quadrangle Development Corporation
Abuse contact
amunir@quad1.com
Registered
2017-08-31
Last changed
2017-08-31
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
50% valid · 2 valid, 2 with no ROA
ROAs
2 authorising AS19316
ASPA
no ASPA record
IRR
0% registered · 0 of 4 announcements
Route objects
1 naming AS19316

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 447 networks and 1,852 prefixes, as published 2026-10-27. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check