AS19717 — MAINSTREAMDATA-375

AS19717 announces 4 IPv4 prefixes covering 1,280 addresses and 0 IPv6 prefixes.

About this network

MAINSTREAMDATA-375 is operated by Mainstream Data, Inc.

What it's used for

• The address space carries internal corporate infrastructure for a media streaming platform, evidenced by reverse DNS entries such as simftp.mainstreamdata.com, mediasnet04.mainstreamdata.com, and client190.mainstreamdata.com.
• The AS announces 1280 IPv4 addresses across 4 prefixes with only 3 observed neighbours, indicating a small-scale internal corporate estate rather than a transit or access network.

Notable

• Registrants are mixed: two prefixes are registered to Allstream Business US, LLC with netnames ELI-NETWORK-ELIX, while the other two are registered to Mainstream Data, Inc. with netnames ITCM-209-63-3-0-24 and ITCM-209-63-42-0-24.
• The address inventory is small and finely subdivided, consistent with site-by-site segmentation for a single corporate entity.

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

Announced prefixes

• 67.50.119.0/24
• 70.102.230.0/23
• 209.63.3.0/24
• 209.63.42.0/24

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS7385 Allstream Business US, LLC

Downstream networks

• AS63039 Spok Inc.

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS63039 Spok Inc.
• AS7385 Allstream Business US, LLC

Routing security

• RPKI: 4 valid, 0 invalid and 0 not-found announcements; 4 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 4 route objects.