Level 3 Communications, Inc.

Autonomous Systems are networks typically governed by large ISPs that participate in global Internet routing. Each network is assigned a unique identification number known as the AS number or ASN by the Internet Assigned Numbers Authority.

ASN	203
Name	CENTURYLINK-LEGACY-LVLT-203
Organization	Level 3 Communications, Inc.
Country	United States
Registry	ARIN

IPv4 addresses	335,552
IPv6 /64 networks	232
Prefixes	177

IPv4 Prefixes for AS203 - showing the first 20 of 176 networks

Network		Location	Addresses
128.177.179.0/24	Zayo Bandwidth	Washington D.C. (Southwest Washington)	256
143.112.0.0/17	Level 3 Communications, Inc.	Irving	32,768
143.112.128.0/18	Level 3 Communications, Inc.	New York	16,384
143.112.128.0/22	Level 3 Communications, Inc.	New York	1,024
143.112.144.0/22	Level 3 Communications, Inc.	New York	1,024
143.112.192.0/19	Level 3 Communications, Inc.	Irving	8,192
143.112.68.0/22	Level 3 Communications, Inc.	Atlanta	1,024
143.199.109.0/24	Level 3 Communications, Inc.	New York	256
143.199.135.0/24	Level 3 Communications, Inc.	New York	256
143.199.140.0/23	Level 3 Communications, Inc.	Washington D.C.	512
143.199.145.0/24	Level 3 Communications, Inc.	New York	256
143.199.222.0/24	Level 3 Communications, Inc.	New York	256
143.199.28.0/24	Level 3 Communications, Inc.	New York	256
143.199.96.0/24	Level 3 Communications, Inc.	Sterling	256
148.59.168.0/24	Fleetcor Technologies Operating Company	Norcross	256
148.59.169.0/24	Fleetcor Technologies Operating Company	Norcross	256
149.21.0.0/16	Level 3 Communications, Inc.	Irving	65,536
156.42.0.0/19	Maricopa County Government	Phoenix (Downtown Phoenix)	8,192
156.42.128.0/19	Level 3 Communications, Inc.	Phoenix (Downtown Phoenix)	8,192
156.42.160.0/19	Level 3 Communications, Inc.	Phoenix (Downtown Phoenix)	8,192

IPv6 Prefixes for AS203

Network		Location	/64 Prefixes
2804:cf4::/32	Tellius & Allnet Telecomunicações Das Américas	Araçatuba	232