| 137.200.0.0/18 | SSA | Social Security Administration, US137.200.0.0/16 |
| 137.200.0.0/19 | SSA | Social Security Administration, US137.200.0.0/16 |
| 137.200.0.0/20 | SSA | Social Security Administration, US137.200.0.0/16 |
| 137.200.11.0/24 | SSA | Social Security Administration, US137.200.0.0/16 |
| 137.200.16.0/20 | SSA | Social Security Administration, US137.200.0.0/16 |
| 137.200.32.0/19 | SSA | Social Security Administration, US137.200.0.0/16 |
| 137.200.32.0/20 | SSA | Social Security Administration, US137.200.0.0/16 |
| 137.200.48.0/20 | SSA | Social Security Administration, US137.200.0.0/16 |
| 137.200.49.0/24 | SSA | Social Security Administration, US137.200.0.0/16 |
| 137.200.228.0/24 | SSA | Social Security Administration, US137.200.0.0/16 |
| 199.173.224.0/21 | UU-199-173-224-D2 | Social Security Administration, US199.172.0.0/15 |
| 199.173.224.0/22 | UU-199-173-224-D2 | Social Security Administration, US199.172.0.0/15 |
| 199.173.228.0/22 | NETBLK-UUCBLK170-173 | Verizon Business, US199.172.0.0/15 |
uu: 209, 701, 3356 u4: 209, 701, 3356 u6: 209, 701, 3356 dd: d4: d6:
| AS209 | 🔼 upstream | CENTURYLINK-US-LEGACY-QWEST CenturyLink Communications LLC, US |
| AS701 | 🔼 upstream | UUNET Verizon Business, US |
| AS3356 | 🔼 upstream | LEVEL3 Level 3 Parent LLC, US |