San Francisco Department of Telecommunications and Information Services
BGP inherited
Cluster stats
| Netblocks | 13 · 125,171 IPv4 addresses |
| All fragments | 63 blocks across 15 clusters |
| Cluster ID | 208811557 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 7 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
5 weekly snapshots · JSON
13
0 netblocks since 2026-07-05
2026-07-05
peak 13
2026-07-19
IP Ranges (13)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 208.121.0.0/24 | San Francisco Department of Telecommunications and Information Services | BGP | ANNOUNCED | ● high |
| 208.121.1.0/24 | San Francisco Department of Telecommunications and Information Services | BGP | ANNOUNCED | ● high |
| 208.121.5.0/24 | San Francisco Department of Telecommunications and Information Services | BGP | ANNOUNCED | ● high |
| 208.121.6.0/24 | San Francisco Department of Telecommunications and Information Services | BGP | ANNOUNCED | ● high |
| 208.121.32.0/20 | San Francisco Department of Telecommunications and Information Services | BGP | ANNOUNCED | ● high |
| 208.121.48.0/20 | San Francisco Department of Telecommunications and Information Services | BGP | ANNOUNCED | ● high |
| 208.121.64.0/18 | San Francisco Department of Telecommunications and Information Services | BGP | ANNOUNCED | ● high |
| 208.121.128.0/17 | San Francisco Department of Telecommunications and Information Services | BGP | ANNOUNCED | ● high |
| 208.121.203.0/24 | San Francisco Department of Telecommunications and Information Services | BGP | ANNOUNCED | ● high |
| 208.121.224.0/24 | San Francisco Department of Telecommunications and Information Services | BGP | ANNOUNCED | ● high |
| 208.121.225.0/24 | San Francisco Department of Telecommunications and Information Services | BGP | ANNOUNCED | ● high |
| 208.121.226.0/23 | San Francisco Department of Telecommunications and Information Services | BGP | ANNOUNCED | ● high |
| 208.121.0.0/16 | San Francisco Department of Telecommunications and Information Services | ARIN | DIRECT ALLOCATION | ● low |
NIC Handles
AS39961
BELLB45-ARIN
DTSEC-ARIN
GRY9-ARIN
GRY9-ARIN
NOC3189-ARIN
SFDTIS