AS609 Ernst & Young LLP

EY-AS-L - Ernst & Young LLP · registered in the United States

IPv4 addresses4,8643 prefixes · <0.001% of announced IPv4

Rank in United States#4,175largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#13,930of 79,396 networks with IPv4

IPv64,096 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS609 in ASN lookup Look up an IP in this network (199.52.148.1) All networks in United States

IPv4 prefixes

All 3 prefixes, in address order.

199.52.148.0/23
199.52.150.0/24
199.52.240.0/20

IPv6 prefixes

All 1 prefix.

2602:80d:8000::/36

Other ASNs named Ernst & Young LLP

3 other networks use the same organisation name; together with AS609 they announce 12,800 IPv4 addresses.

ASNNameIPv4 addresses

AS3571EY-AS - Ernst & Young LLP US4,608

AS40810EY-AS-SG - Ernst & Young LLP US1,792

AS400060EY-AS-DSFW - Ernst & Young LLP US1,536

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ASNNameIPv4 addresses

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AS30612#4174 EAGLE-9-AS - Eagle Communications, Inc.4,864

AS20018#4176 MVT-AS - Moapa Valley Telephone Company4,864

AS46974#4177 SERVAXNET - ServaxNet, LLC4,864

AS11228#4178 ARINC - ARINC INCORPORATED4,864

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