Network · data from 2026-11-12
AS3926 FFX-CNTY - Fairfax County Dept of Information Technology
Registry name: FFX-CNTY - Fairfax County Dept of Information Technology, US · not in PeeringDB
Announced routes
Every prefix a peer of the route collectors sees with origin AS3926, things to look at first. Visibility = full-table peers that see it, of 673 (IPv4) and 636 (IPv6) on 75 collectors. Also as routes.csv.
| 166.94.16.0/24 | No ROA | Nonecovered by 166.94.0.0/16 | 673 100% |
| 166.94.112.0/24 | No ROA | Nonecovered by 166.94.0.0/16 | 673 100% |
| 166.94.113.0/24 | No ROA | Nonecovered by 166.94.0.0/16 | 673 100% |
| 166.94.0.0/16 | No ROA | Other IRR onlyRADB | 673 100% |
| 166.94.176.0/20 | No ROA | Other IRR onlyRADB | 673 100% |
| 198.24.16.0/20 | No ROA | Other IRR onlyRADB | 673 100% |
| 166.94.15.0/24 | No ROA | Other IRR onlyRADB | 671 100% |
| 166.94.150.0/23 | No ROA | Other IRR onlyRADB | 671 100% |
AS-SET
AS3926 isn't in PeeringDB, where networks name their AS-SET.
Fix list
The changes that would bring RPKI, the IRR and what's announced into line. Some are deliberate (a route object kept for a backup route, say); the network decides. All 25 are in fix.csv.
- ROA: none8
- Route object: none3
- Route object: RIR5
- Route object: not announced9
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 166.94.16.0/24 | No ROA covers it. Add a ROA for AS3926, maxLength 24. |
| Route object: none | 166.94.16.0/24 | No route object for it. A route object for 166.94.0.0/16 with origin AS3926 covers it (filters allowing more-specifics accept it). Add a route object with origin AS3926 in the RIR database for the space. |
| ROA: none | 166.94.112.0/24 | No ROA covers it. Add a ROA for AS3926, maxLength 24. |
| Route object: none | 166.94.112.0/24 | No route object for it. A route object for 166.94.0.0/16 with origin AS3926 covers it (filters allowing more-specifics accept it). Add a route object with origin AS3926 in the RIR database for the space. |
| ROA: none | 166.94.113.0/24 | No ROA covers it. Add a ROA for AS3926, maxLength 24. |
| Route object: none | 166.94.113.0/24 | No route object for it. A route object for 166.94.0.0/16 with origin AS3926 covers it (filters allowing more-specifics accept it). Add a route object with origin AS3926 in the RIR database for the space. |
| ROA: none | 166.94.0.0/16 | No ROA covers it. Add a ROA for AS3926, maxLength 16. |
| Route object: RIR | 166.94.0.0/16 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 166.94.176.0/20 | No ROA covers it. Add a ROA for AS3926, maxLength 20. |
| Route object: RIR | 166.94.176.0/20 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 198.24.16.0/20 | No ROA covers it. Add a ROA for AS3926, maxLength 20. |
| Route object: RIR | 198.24.16.0/20 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 166.94.15.0/24 | No ROA covers it. Add a ROA for AS3926, maxLength 24. |
| Route object: RIR | 166.94.15.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 166.94.150.0/23 | No ROA covers it. Add a ROA for AS3926, maxLength 23. |
| Route object: RIR | 166.94.150.0/23 | Route object only in RADB. Add it in the RIR database for the space. |
Route objects not announced
Route objects with origin AS3926 whose prefix no peer sees AS3926 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 166.94.6.0/24 | RADB | No ROA |
| 166.94.8.0/21 | RADB | No ROA |
| 166.94.36.0/24 | RADB | No ROA |
| 166.94.148.0/23 | RADB | No ROA |
| 166.94.192.0/24 | RADB | No ROA |
| 198.24.28.0/23 | RADB | No ROA |
| 198.24.30.0/24 | RADB | No ROA |
| 198.24.31.0/24 | RADB | No ROA |
| 2606:d00::/32 | RADB | No ROA |
Routes: the 08:00 UTC snapshots of 2026-11-12 from 75 RIPE RIS and RouteViews collectors. RPKI: our rpki-client run before the snapshot. IRR: the day's dumps of the five RIR databases and RADB's mirrors. The LEVEL3 and IDNIC databases publish no dump and aren't read, so route objects only there count as none.