asn.dev

Autonomous system

AS19717 MAINSTREAMDATA-375

Unclassified ARIN

IPv4 addresses 1.28K 4 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 1 downstream
Flagged prefixes 0 none

Summary

Mainstream Data, Inc.

United States of America · AI-generated

business media streaming enterprise

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. 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

2 upstream, 1 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS3356Level 3 Parent, LLC180
AS7385Allstream Business US, LLC60

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-19, 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 · 1.28K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America4

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS19717
Registry name
MAINSTREAMDATA-375
Registrant
Mainstream Data, Inc.
Abuse contact
dnsadmin@mainstreamdata.com
Registered
2001-02-07
Last changed
2012-02-24
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 4 valid, 0 with no ROA
ROAs
4 authorising AS19717
ASPA
no ASPA record
IRR
100% registered · 4 of 4 announcements
Route objects
4 naming AS19717

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: 442 networks and 1,783 prefixes, as published 2026-10-20. 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