Data as of Nov 8, 2026
208.121.128.0/17
No anonymizer space · no proxy exits in 30 daysSan Francisco Department of Telecommunications and Information Services
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 208.121.203.0/24 since Sep 2019 | AS39961 | Business | San Francisco Department of Telecommunications and Information Services | |
| 208.121.224.0/24 since Oct 2016 | AS39961 | Business | San Francisco Department of Telecommunications and Information Services | |
| 208.121.225.0/24 since Jul 2018 | AS39961 | Business | San Francisco Department of Telecommunications and Information Services | |
| 208.121.226.0/23 since Aug 2018 | AS39961 | Business | San Francisco Department of Telecommunications and Information Services | |
| 208.121.230.0/24 since Sep 2026 | AS39961 | Business | San Francisco Department of Telecommunications and Information Services |
Network & registry
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Jan 2014
- Current origin since
- Jan 2014 · 13 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 208.121.0.0/16 | AS39961 | /32 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 208.
121. 0. 0/ 16 - Netname
- CCSF
- Registrant
- San Francisco Department of Telecommunications and Information Services
- Organization
- San Francisco Department of Telecommunications and Information Services (SFDTIS)
- Org address
- One South Van Ness Avenue, San Francisco, CA, 94103
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-208-121-0-0-1
- Parent
- NET-208-0-0-0-0
- Created
- May 11, 2006
- RIR
- ARIN
- Country
- US
- Delegated
- May 11, 2006
- Status
- assigned
Report abuse
Abuse contact
- cyberdefense@
sfgov. org - Name
- DT Security
- Phone
- +1-628-652-5000
- Handle
- DTSEC-ARIN