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 | 3371 |
|---|
| Name | MCI-ASN - MCI |
|---|
| Organization | MCI |
|---|
| Country | United States 
|
|---|
| Registry | ARIN |
|---|
| IPv4 addresses | 1,373,184 |
|---|
| IPv6 /64 networks | 0 |
|---|
| Prefixes | 20 |
|---|
IPv4 addresses
| Network |
Location |
Addresses |
| 142.77.10.0/23 |
Verizon Communications |
Washington D.C. |
512 |
| 142.77.72.0/22 |
Verizon Communications |
Washington D.C. |
1,024 |
| 142.77.76.0/22 |
Verizon Communications |
Washington D.C. |
1,024 |
| 142.77.8.0/23 |
Verizon Communications |
Washington D.C. |
512 |
| 142.77.80.0/21 |
Verizon Communications |
Washington D.C. |
2,048 |
| 142.77.88.0/21 |
Verizon Communications |
Washington D.C. |
2,048 |
| 153.39.128.0/17 |
Verizon Communications |
Washington D.C. |
32,768 |
| 153.39.96.0/19 |
Verizon Communications |
Atlanta |
8,192 |
| 159.98.0.0/16 |
Verizon Communications |
Washington D.C. |
65,536 |
| 166.32.0.0/12 |
Mci |
Ashburn |
1,048,576 |
| 166.32.192.0/20 |
Mci |
Ashburn |
4,096 |
| 166.44.248.0/22 |
Mci |
Washington D.C. |
1,024 |
| 166.50.0.0/16 |
Mci |
Ashburn |
65,536 |
| 166.56.0.0/16 |
Mci |
Ashburn |
65,536 |
| 166.58.0.0/16 |
Mci |
Washington D.C. |
65,536 |
| 199.170.112.0/24 |
Verizon Communications |
Tulsa (Yorktown) |
256 |
| 199.202.116.0/24 |
Verizon Communications |
Washington D.C. |
256 |
| 205.150.160.0/24 |
Verizon Communications |
Washington D.C. |
256 |
| 205.150.162.0/24 |
Verizon Communications |
Washington D.C. |
256 |
| 209.154.224.0/19 |
Verizon Communications |
Washington D.C. |
8,192 |
