AS40167 — SCHIFFRINBARROWAY

AS40167 announces 1 IPv4 prefixes covering 256 addresses and 0 IPv6 prefixes.

About this network

The AS handle SCHIFFRINBARROWAY is held by Schiffrin & Barroway, LLP.

What it's used for

• The single announced prefix 38.98.252.0/24 carries the netname COGENT-A with registrant Cogent Communications, LLC, indicating the address space is leased from Cogent.
• The AS announces 256 IPv4 addresses across 1 prefix and maintains 2 observed neighbours, a ratio consistent with a small corporate or office network rather than a transit or access provider.
• Traffic from this AS consists of office workers and internal corporate endpoints for a shareholder litigation and class action law firm.

Notable

• The RDAP registrant for the announced prefix is Cogent Communications, LLC, which differs from the AS holder Schiffrin & Barroway, LLP, confirming the use of leased address space.
• Secondary sources indicate the firm changed its name to Barroway Topaz Kessler Meltzer & Check, LLP, though the AS registry still reflects the original name.
• The address inventory consists of a single /24 block with no IPv6 prefixes, representing a minimal footprint for a professional services firm.

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

Announced prefixes

• 38.98.252.0/24

Upstream networks

• AS30372 Crown Castle Fiber LLC
• AS174 Cogent Communications, LLC

Adjacent networks

• AS30372 Crown Castle Fiber LLC
• AS174 Cogent Communications, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 1 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 2 route objects.
• Listed in as-sets: AS-JARMTELCO, AS-XO, AS-XO-B, AS-YIPES.