AS203

Level 3 Communications, Inc.

AS 203 CENTURYLINK-LEGACY-LVLT-203

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.

128,896 IP addresses
ASN203
NameCENTURYLINK-LEGACY-LVLT-203
OrganizationLevel 3 Communications, Inc.
CountryUnited States  
RegistryARIN
IPv4 addresses128,896
IPv6 /64 networks232
Prefixes173
Other ASN allocated to Level 3 Communications, Inc.
ASN Name IP addresses
3356 LEVEL3 34,673,282
3549 LVLT-3549 5,444,960
10753 LUMEN-LEGACY-L3-CUSTOMER-SHARED-USE 607,712
18756 PATEAM 260,864
1 LVLT-1 108,720
202 CENTURYLINK-LEGACY-LVLT-202 1,024
596 CENTURYLINK-LEGACY-LVLT-596 512
19094 RESERVED-IPADMIN 256
7911 LVLT-7911 0
8043 LVLT-8043 0
7176 LVLT-7176-RESERVED-IPADMIN 0
7037 CENTURYLINK-LEGACY-TWTC-7037 0
11213 RESERVED-IPADMIN 0
16852 RESERVED-IPADMIN 0
19591 LVLT-19591 0
19962 RESERVED-IPADMIN 0
20476 RESERVED-IPADMIN 0
22026 RESERVED-IPADMIN 0
26458 CENTRAL-BL 0
30686 LVLT-30686-RESERVED-IPADMIN 0
6484 LUMEN-LEGACY-LEVEL3-RUSSIA 0
6467 CENTURYLINK-LEGACY-TW-XSPEDIUS-ESPIRECOMM 0
6395 LVLT-6395 0
189 LUMEN-LEGACY-L3-PARTITION 0
199 CENTURYLINK-LEGACY-LVLT-199 0
200 CENTURYLINK-LEGACY-LVLT-200 0
201 CENTURYLINK-LEGACY-LVLT-201 0
279 LVLT-279 0
281 LVLT-281 0
560 LVLT-560 0
594 CENTURYLINK-LEGACY-LVLT-594 0
595 CENTURYLINK-LEGACY-LVLT-595 0
597 CENTURYLINK-LEGACY-LVLT-597 0
598 CENTURYLINK-LEGACY-LVLT-598 0
2551 RESERVED-IPADMIN 0
3508 CENTURYLINK-LEGACY-TW-COMM 0
3831 RESERVED-IPADMIN 0
4323 CENTURYLINK-LEGACY-TWTC 0
32421 BLCC 0
IPv4 Prefixes for AS203 - showing the first 20 of 172 networks
Network Location Addresses
128.177.179.0/24 Zayo Bandwidth   Washington D.C. (Southwest Washington) 256
129.220.48.0/20 Level 3 Communications, Inc.   Salt Lake City 4,096
129.220.64.0/19 Level 3 Communications, Inc.   Salt Lake City 8,192
156.42.0.0/19 Level 3 Communications, Inc.   Phoenix (Central City) 8,192
156.42.128.0/19 Level 3 Communications, Inc.   Phoenix (Central City) 8,192
156.42.160.0/19 Level 3 Communications, Inc.   Phoenix (Central City) 8,192
156.42.192.0/19 Level 3 Communications, Inc.   Phoenix (Central City) 8,192
156.42.224.0/19 Level 3 Communications, Inc.   Phoenix (Central City) 8,192
156.42.32.0/19 Level 3 Communications, Inc.   Phoenix (Central City) 8,192
156.42.64.0/19 Level 3 Communications, Inc.   Phoenix (Central City) 8,192
156.42.96.0/19 Level 3 Communications, Inc.   Phoenix (Central City) 8,192
158.120.127.0/24 Level 3 Communications, Inc.   Colorado Springs 256
161.209.100.0/24 Level 3 Communications, Inc.   Ashburn 256
161.209.101.0/24 Level 3 Communications, Inc.   Ashburn 256
161.209.102.0/24 Level 3 Communications, Inc.   Ashburn 256
161.209.103.0/24 Level 3 Communications, Inc.   Ashburn 256
161.209.111.0/24 Level 3 Communications, Inc.   Ashburn 256
161.209.192.0/19 Level 3 Communications, Inc.   Los Angeles (Downtown Los Angeles) 8,192
161.209.225.0/24 Level 3 Communications, Inc.   Ashburn 256
161.209.96.0/20 Level 3 Communications, Inc.   Ashburn 4,096
IPv6 Prefixes for AS203
Network Location /64 Prefixes
2804:cf4::/32 Tellius & Allnet Telecomunicações Das Américas   Araçatuba 232