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.

292,672 IP addresses
ASN203
NameCENTURYLINK-LEGACY-LVLT-203
OrganizationLevel 3 Communications, Inc.
CountryUnited States  
RegistryARIN
IPv4 addresses292,672
IPv6 /64 networks216
Prefixes210
Other ASN allocated to Level 3 Communications, Inc.
ASN Name IP addresses
3356 LEVEL3 37,660,973
3549 LVLT-3549 6,008,160
10753 LUMEN-LEGACY-L3-CUSTOMER-SHARED-USE 375,648
18756 PATEAM 267,520
1 LVLT-1 15,472
32421 BLCC 14,592
30686 LVLT-30686 4,352
202 CENTURYLINK-LEGACY-LVLT-202 1,024
596 CENTURYLINK-LEGACY-LVLT-596 512
19094 RESERVED-IPADMIN 512
598 CENTURYLINK-LEGACY-LVLT-598 256
8043 LVLT-8043 0
199 CENTURYLINK-LEGACY-LVLT-199 0
7911 LVLT-7911 0
11213 RESERVED-IPADMIN 0
16852 RESERVED-IPADMIN 0
189 LUMEN-LEGACY-L3-PARTITION 0
279 LVLT-279 0
19591 LVLT-19591 0
19962 RESERVED-IPADMIN 0
20476 RESERVED-IPADMIN 0
22026 RESERVED-IPADMIN 0
26458 CENTRAL-BL 0
7176 LVLT-7176 0
7037 CENTURYLINK-LEGACY-TWTC-7037 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
2551 RESERVED-IPADMIN 0
3508 CENTURYLINK-LEGACY-TW-COMM 0
201 CENTURYLINK-LEGACY-LVLT-201 0
3831 RESERVED-IPADMIN 0
200 CENTURYLINK-LEGACY-LVLT-200 0
6395 LVLT-6395 0
6467 CENTURYLINK-LEGACY-TW-XSPEDIUS-ESPIRECOMM 0
6484 LUMEN-LEGACY-LEVEL3-RUSSIA 0
4323 CENTURYLINK-LEGACY-TWTC 0
IPv4 Prefixes for AS203 - showing the first 20 of 209 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
129.225.112.0/23 Level 3 Communications, Inc.   Ashburn 512
129.225.116.0/23 Level 3 Communications, Inc.   Ashburn 512
129.225.118.0/23 Level 3 Communications, Inc.   Ashburn 512
129.225.120.0/23 Level 3 Communications, Inc.   Ashburn 512
129.225.122.0/23 Level 3 Communications, Inc.   Ashburn 512
129.225.124.0/24 Level 3 Communications, Inc.   Ashburn 256
129.225.129.0/24 Level 3 Communications, Inc.   Ashburn 256
129.225.130.0/24 Level 3 Communications, Inc.   Ashburn 256
129.225.136.0/21 Level 3 Communications, Inc.   Ashburn 2,048
129.225.144.0/23 Level 3 Communications, Inc.   Ashburn 512
129.225.146.0/24 Level 3 Communications, Inc.   Ashburn 256
129.225.240.0/24 Level 3 Communications, Inc.   Ashburn 256
129.225.251.0/24 Level 3 Communications, Inc.   Ashburn 256
129.225.77.0/24 Level 3 Communications, Inc.   Ashburn 256
129.225.78.0/24 Level 3 Communications, Inc.   Ashburn 256
129.225.79.0/24 Level 3 Communications, Inc.   Ashburn 256
129.225.80.0/22 Level 3 Communications, Inc.   Ashburn 1,024
IPv6 Prefixes for AS203
Network Location /64 Prefixes
2a07:aa00:7::/48 Level 3 Communications, Inc.   London 216