San Francisco Department of Telecommunications and Information Services
Data as of 2026-10-18
BGP inherited
This organisation
| Netblocks | 14 · 65,536 IPv4 addresses |
| Also registered under this name | 80 netblocks across 16 separate records |
| Record ID | 250161023 |
| Registry | BGP |
| Customers | see who runs inside 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 · report an issue | |
IP Ranges (14)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 208.121.0.0/16 | San Francisco Department of Telecommunications and Information Services | ARIN | DIRECT ALLOCATION | ● high |
| 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 |
| 208.121.230.0/24 | San Francisco Department of Telecommunications and Information Services | BGP | ANNOUNCED | ● high |
Footprint over time
17 weekly snapshots · JSON
14
+1 netblocks since 2026-07-05
2026-07-05
peak 14
2026-10-18
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(14 of 14)
No discrepancies found among checked blocks.
NIC Handles
AS39961
BELLB45-ARIN
DTSEC-ARIN
GRY9-ARIN
GRY9-ARIN
NOC3189-ARIN
SFDTIS