AS21646 — FISHER

AS21646 announces 13 IPv4 prefixes covering 3,328 addresses and 0 IPv6 prefixes.

About this network

The AS handle FISHER is operated by Fisher Investments Inc., a private investment management firm.

What it's used for

• The address space carries internal corporate infrastructure, evidenced by netnames referencing specific office locations such as PLANO, CAMAS, and EQIX-SEATTLE, as well as service-specific names like fsmtp3.fisherinvestmentsevents.com.
• With 13 IPv4 prefixes covering 3328 addresses and only 6 observed neighbours, the ratio indicates a small, self-contained corporate estate rather than a transit or access provider.

Notable

• Registrants are consistent with the announcer, listing variations of "Fisher Investments Inc." across most prefixes, though one block (204.199.211.0/24) is registered to CTL Costa Rica.
• The inventory consists of 13 distinct /24 blocks, many of which appear to be leased or allocated for specific data center or office sites, reflecting a fragmented but internally managed network.

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

Announced prefixes

• 8.47.20.0/24
• 63.151.180.0/24
• 63.156.165.0/24
• 63.159.249.0/24
• 64.124.143.0/24
• 172.87.40.0/24
• 204.107.250.0/24
• 204.199.211.0/24
• 207.210.64.0/24
• 207.210.70.0/24
• 207.210.73.0/24
• 207.214.127.0/24
• 208.45.153.0/24

Upstream networks

• AS3257 GTT Communications Inc.
• AS3356 Level 3 Parent, LLC
• AS6461 Zayo Bandwidth
• AS7018 AT&T Enterprises, LLC
• AS262197 MILLICOM CABLE COSTA RICA S.A.

Adjacent networks

• AS3257 GTT Communications Inc.
• AS3356 Level 3 Parent, LLC
• AS6461 Zayo Bandwidth
• AS7018 AT&T Enterprises, LLC
• AS262197 MILLICOM CABLE COSTA RICA S.A.