Network · data from 2026-11-12
AS18334 GCNCATV-AS-KR-KR - Gyounggidongbu cable tv co., Ltd.
Registry name: GCNCATV-AS-KR-KR - Gyounggidongbu cable tv co., Ltd., KR · not in PeeringDB
17IPv4 routes
0.0% RPKI valid · 70.6% with a route object
0IPv6 routes
0RPKI invalid
0 origin · 0 maxLength
17No ROA
5 with no route object for this origin
0Low visibility
seen by under 10% of full-table peers
8Route objects not announced
registered with origin AS18334, seen from no peer
Announced routes
Every prefix a peer of the route collectors sees with origin AS18334, 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.
| 121.100.64.0/24 | No ROA | Nonecovered by 121.100.64.0/21 | 672 100% |
| 121.100.65.0/24 | No ROA | Nonecovered by 121.100.64.0/21 | 672 100% |
| 121.100.66.0/24 | No ROA | Nonecovered by 121.100.64.0/21 | 672 100% |
| 121.100.67.0/24 | No ROA | Nonecovered by 121.100.64.0/21 | 672 100% |
| 121.100.124.0/22 | No ROA | Nonecovered by 121.100.120.0/21 | 672 100% |
| 101.235.176.0/20 | No ROA | Other IRR onlyRADB | 672 100% |
| 175.28.40.0/22 | No ROA | Other IRR onlyRADB | 672 100% |
| 103.23.84.0/22 | No ROA | Other IRR onlyRADB | 670 100% |
| 121.100.72.0/21 | No ROA | Other IRR onlyRADB | 670 100% |
| 121.100.80.0/21 | No ROA | Other IRR onlyRADB | 670 100% |
| 121.100.88.0/21 | No ROA | Other IRR onlyRADB | 670 100% |
| 121.100.96.0/21 | No ROA | Other IRR onlyRADB | 670 100% |
| 121.100.104.0/21 | No ROA | Other IRR onlyRADB | 670 100% |
| 121.100.112.0/21 | No ROA | Other IRR onlyRADB | 670 100% |
| 175.28.32.0/22 | No ROA | Other IRR onlyNTTCOM, RADB | 670 100% |
| 175.28.36.0/22 | No ROA | Other IRR onlyNTTCOM, RADB | 670 100% |
| 175.28.44.0/22 | No ROA | Other IRR onlyRADB | 670 100% |
AS-SET
AS18334 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 42 are in fix.csv.
- ROA: none17
- Route object: none5
- Route object: RIR12
- Route object: not announced8
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 121.100.64.0/24 | No ROA covers it. Add a ROA for AS18334, maxLength 24. |
| Route object: none | 121.100.64.0/24 | No route object for it. A route object for 121.100.64.0/21 with origin AS18334 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18334 in the RIR database for the space. |
| ROA: none | 121.100.65.0/24 | No ROA covers it. Add a ROA for AS18334, maxLength 24. |
| Route object: none | 121.100.65.0/24 | No route object for it. A route object for 121.100.64.0/21 with origin AS18334 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18334 in the RIR database for the space. |
| ROA: none | 121.100.66.0/24 | No ROA covers it. Add a ROA for AS18334, maxLength 24. |
| Route object: none | 121.100.66.0/24 | No route object for it. A route object for 121.100.64.0/21 with origin AS18334 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18334 in the RIR database for the space. |
| ROA: none | 121.100.67.0/24 | No ROA covers it. Add a ROA for AS18334, maxLength 24. |
| Route object: none | 121.100.67.0/24 | No route object for it. A route object for 121.100.64.0/21 with origin AS18334 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18334 in the RIR database for the space. |
| ROA: none | 121.100.124.0/22 | No ROA covers it. Add a ROA for AS18334, maxLength 22. |
| Route object: none | 121.100.124.0/22 | No route object for it. A route object for 121.100.120.0/21 with origin AS18334 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18334 in the RIR database for the space. |
| ROA: none | 101.235.176.0/20 | No ROA covers it. Add a ROA for AS18334, maxLength 20. |
| Route object: RIR | 101.235.176.0/20 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 175.28.40.0/22 | No ROA covers it. Add a ROA for AS18334, maxLength 22. |
| Route object: RIR | 175.28.40.0/22 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 103.23.84.0/22 | No ROA covers it. Add a ROA for AS18334, maxLength 22. |
| Route object: RIR | 103.23.84.0/22 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 121.100.72.0/21 | No ROA covers it. Add a ROA for AS18334, maxLength 21. |
| Route object: RIR | 121.100.72.0/21 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 121.100.80.0/21 | No ROA covers it. Add a ROA for AS18334, maxLength 21. |
| Route object: RIR | 121.100.80.0/21 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 121.100.88.0/21 | No ROA covers it. Add a ROA for AS18334, maxLength 21. |
| Route object: RIR | 121.100.88.0/21 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 121.100.96.0/21 | No ROA covers it. Add a ROA for AS18334, maxLength 21. |
| Route object: RIR | 121.100.96.0/21 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 121.100.104.0/21 | No ROA covers it. Add a ROA for AS18334, maxLength 21. |
| Route object: RIR | 121.100.104.0/21 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 121.100.112.0/21 | No ROA covers it. Add a ROA for AS18334, maxLength 21. |
| Route object: RIR | 121.100.112.0/21 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 175.28.32.0/22 | No ROA covers it. Add a ROA for AS18334, maxLength 22. |
| Route object: RIR | 175.28.32.0/22 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 175.28.36.0/22 | No ROA covers it. Add a ROA for AS18334, maxLength 22. |
| Route object: RIR | 175.28.36.0/22 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 175.28.44.0/22 | No ROA covers it. Add a ROA for AS18334, maxLength 22. |
| Route object: RIR | 175.28.44.0/22 | Route object only in RADB. Add it in the RIR database for the space. |
Route objects not announced
Route objects with origin AS18334 whose prefix no peer sees AS18334 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 121.100.64.0/18 | RADB | No ROA |
| 121.100.64.0/19 | RADB | No ROA |
| 121.100.64.0/21 | RADB | No ROA |
| 121.100.96.0/19 | RADB | No ROA |
| 121.100.120.0/21 | RADB | No ROA |
| 175.28.32.0/20 | RADB | No ROA |
| 203.249.112.0/23 | RADB | No ROA |
| 210.93.76.0/22 | 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.