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 | 2551 |
|---|
| Name | LVLT-2551 |
|---|
| Organization | Level 3 Communications, Inc. |
|---|
| Country | United States 
|
|---|
| Registry | ARIN |
|---|
| IPv4 addresses | 10,752 |
|---|
| IPv6 /64 networks | 0 |
|---|
| Prefixes | 4 |
|---|
Other ASN allocated to Level 3 Communications, Inc.
| ASN |
Name |
IP addresses |
| 3356 |
LEVEL3 |
58,556,670 |
| 3549 |
LVLT-3549 |
6,107,008 |
| 10753 |
LVLT-10753 |
340,352 |
| 18756 |
PATEAM |
267,520 |
| 203 |
CENTURYLINK-LEGACY-LVLT-203 |
125,056 |
| 1 |
LVLT-1 |
14,768 |
| 32421 |
BLCC |
13,568 |
| 560 |
LVLT-560 |
4,352 |
| 30686 |
LVLT-30686 |
4,352 |
| 202 |
CENTURYLINK-LEGACY-LVLT-202 |
2,304 |
| 201 |
CENTURYLINK-LEGACY-LVLT-201 |
512 |
| 11213 |
LVLT |
512 |
| 200 |
CENTURYLINK-LEGACY-LVLT-200 |
512 |
| 598 |
CENTURYLINK-LEGACY-LVLT-598 |
256 |
| 596 |
CENTURYLINK-LEGACY-LVLT-596 |
0 |