AS21975 — LOOMISSAYLES - LOOMIS SAYLES & CO., LP

AS21975 announces 3 IPv4 prefixes covering 1,024 addresses and 0 IPv6 prefixes.

About this network

The AS handle LOOMISSAYLES is held by Loomis Sayles & Company, L.P.

What it's used for

• The address space carries corporate infrastructure for an investment management firm, evidenced by reverse DNS entries like user128.loomissayles.com and netnames such as UU-65-196-54.
• The AS announces 1024 IPv4 addresses across 3 prefixes with 4 observed neighbours, a ratio consistent with a small internal corporate estate rather than a transit or access network.

Notable

• Registrants largely align with the announcer, with Loomis, Sayles & Company, L P listed for two of the three prefixes, while one prefix is registered to NIM-OS, LLC.
• The inventory consists of three distinct IPv4 blocks, including a /23 and two /24s, with no IPv6 prefixes announced.

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

Announced prefixes

• 63.104.155.0/24
• 63.118.230.0/24
• 65.196.54.0/23

Upstream networks

• AS701 Verizon Business
• AS46887 Crown Castle Fiber LLC
• AS23132 Charter Communications LLC
• AS7046 Verizon Business

Adjacent networks

• AS701 Verizon Business
• AS46887 Crown Castle Fiber LLC
• AS23132 Charter Communications LLC
• AS7046 Verizon Business

Routing security

• RPKI: 4 valid, 0 invalid and 0 not-found announcements; 4 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 10 route objects.
• Listed in as-sets: AS-CCF, AS-CHTR-SYNC, AS-HURRICANE, AS-PNAPACS, AS-PNAPCHG, AS-RR-SYNC, AS13536:AS-CONE, AS26554:AS-CUSTOMERS.