123.51.221.0/24 New Century InfoComm Tech Co., Ltd.
Announced by AS9919 New Century InfoComm Tech Co., Ltd. RPKI valid Seen by 3 of our 5 looking glass sessions.
Summary
What the table says about 123.51.221.0/24
Prefix
Origin
AS9919 NCIC-TW
RPKI
RPKI valid
Size
256 addresses
Less specific
More specifics
0
IRR route objects
2 exact, 14 covering
In RouteViews
2026-10-16 08:02 UTC
Paths
How 123.51.221.0/24 is reached
Every path our looking glass collectors hold for this exact prefix. Open one for its attributes, or see them all side by side in the looking glass.
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 36295 6939 4635 4780 9919
| Origin | AS9919 New Century InfoComm Tech Co., Ltd. |
| Origin code | IGP |
| Communities | 903:100 903:900 |
| Updated | 8d 14h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS9919 to originate 123.51.128.0/17 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 123.51.128.0/17 | /24 | AS4780 SEEDNET | APNIC |
| 123.51.128.0/17 | /24 | AS9919 NCIC-TW | APNIC |
IRR
Route objects
Registered in the IRR for this prefix and the ones covering it. Look it up live.
| Route | Origin | Source | Description | Maintained by |
|---|---|---|---|---|
| 123.51.221.0/24 | AS4780 SEEDNET | RADB | New Century InfoComm Tech Co., Ltd. Far Eastone Telecommunications Co., Ltd. No. 220, Gangchi Rd., Taipei 114 Taiwan | MAINT-AS4780 |
| 123.51.221.0/24 | AS9919 NCIC-TW | RADB | NCIC route object | MAINT-AS4780 |
| 123.51.220.0/23 covering | AS4780 SEEDNET | RADB | New Century InfoComm Tech Co., Ltd. Far Eastone Telecommunications Co., Ltd. No. 220, Gangchi Rd., Taipei 114 Taiwan | MAINT-AS4780 |
| 123.51.220.0/23 covering | AS9919 NCIC-TW | RADB | NCIC route object | MAINT-AS4780 |
| 123.51.220.0/22 covering | AS4780 SEEDNET | RADB | New Century InfoComm Tech Co., Ltd. Far Eastone Telecommunications Co., Ltd. No. 220, Gangchi Rd., Taipei 114 Taiwan | MAINT-AS4780 |
| 123.51.220.0/22 covering | AS9919 NCIC-TW | RADB | NCIC route object | MAINT-AS4780 |
| 123.51.216.0/21 covering | AS4780 SEEDNET | RADB | New Century InfoComm Tech Co., Ltd. Far Eastone Telecommunications Co., Ltd. No. 220, Gangchi Rd., Taipei 114 Taiwan | MAINT-AS4780 |
| 123.51.216.0/21 covering | AS9919 NCIC-TW | RADB | PACNET (proxy-registered route object) | MAINT-AS4637 |
| 123.51.208.0/20 covering | AS4780 SEEDNET | RADB | New Century InfoComm Tech Co., Ltd. Far Eastone Telecommunications Co., Ltd. No. 220, Gangchi Rd., Taipei 114 Taiwan | MAINT-AS4780 |
| 123.51.208.0/20 covering | AS9919 NCIC-TW | RADB | NCIC route object | MAINT-AS4780 |
| 123.51.192.0/19 covering | AS4780 SEEDNET | RADB | New Century InfoComm Tech Co., Ltd. Far Eastone Telecommunications Co., Ltd. No. 220, Gangchi Rd., Taipei 114 Taiwan | MAINT-AS4780 |
| 123.51.192.0/19 covering | AS9919 NCIC-TW | RADB | PACNET (proxy-registered route object) | MAINT-AS4637 |
| 123.51.192.0/18 covering | AS4780 SEEDNET | RADB | New Century InfoComm Tech Co., Ltd. Far Eastone Telecommunications Co., Ltd. No. 220, Gangchi Rd., Taipei 114 Taiwan | MAINT-AS4780 |
| 123.51.192.0/18 covering | AS9919 NCIC-TW | RADB | PACNET (proxy-registered route object) | MAINT-AS4637 |
| 123.51.128.0/17 covering | AS4780 SEEDNET | RADB | New Century InfoComm Tech Co., Ltd. Far Eastone Telecommunications Co., Ltd. No. 220, Gangchi Rd., Taipei 114 Taiwan | MAINT-AS4780 |
| 123.51.128.0/17 covering | AS9919 NCIC-TW | RADB | New Century InfoComm Tech Co., Ltd. | MAINT-AS9919 |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.