AS36393 Pfizer Inc.

PFELJ - Pfizer Inc. · registered in the United States

IPv4 addresses7682 prefixes · <0.001% of announced IPv4

Rank in United States#9,673largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#44,293of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS36393 in ASN lookup Look up an IP in this network (146.240.2.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

146.240.2.0/24
148.168.216.0/23

Other ASNs named Pfizer Inc.

2 other networks use the same organisation name; together with AS36393 they announce 66,304 IPv4 addresses.

ASNNameIPv4 addresses

AS11971PFIZERNET-GROTON - Pfizer Inc. US55,296

AS7068PFIZERNET - Pfizer Inc. US10,240

Similar-sized networks in United States

ASNNameIPv4 addresses

AS36336#9670 NATIXIS - Natixis Advisors, LLC768

AS36364#9671 MHSNET - Mary Washington Hospital, Inc.768

AS36365#9672 NEOVEST-US - Neovest, Inc768

AS36406#9674 US-FIRE-INSURANCE-COMPANY - United States Fire Insurance Company768

AS36431#9675 PIH1 - PIH Health, Inc.768

AS36475#9676 ZACKS-AS-1 - Zacks Investment Research Inc.768

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources