90.181.0.0/16 O2 Czech Republic, a.s.
Announced by AS5610 O2 Czech Republic, a.s. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 90.181.0.0/16
Prefix
Origin
AS5610 O2-CZECH-REPUBLIC
RPKI
RPKI valid
Size
65,536 addresses
Less specific
More specifics
0
IRR route objects
1 exact, 2 covering
In RouteViews
2026-10-12 12:02 UTC
Paths
How 90.181.0.0/16 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.
AS36601 TNT (TNT - Tampa, FL)Collector-1-TAMPA-FL36601 174 1299 5610
| Origin | AS5610 O2 Czech Republic, a.s. |
| Origin code | IGP |
| Communities | 174:21000 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 4d 12h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 1299 5610
| Origin | AS5610 O2 Czech Republic, a.s. |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 4d 20h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 5610
| Origin | AS5610 O2 Czech Republic, a.s. |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 4d 20h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS5610 to originate 90.181.0.0/16 up to /16. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 90.181.0.0/16 | /16 | AS5610 O2-CZECH-REPUBLIC | RIPE |
| 90.180.0.0/14 | /14 | AS5610 O2-CZECH-REPUBLIC | RIPE |
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 |
|---|---|---|---|---|
| 90.181.0.0/16 | AS5610 O2-CZECH-REPUBLIC | RIPE | N | AS5610-MTN |
| 90.180.0.0/14 covering | AS5610 O2-CZECH-REPUBLIC | RIPE | CZ.CZNET | AS5610-MTN |
| 90.176.0.0/13 covering | AS5610 O2-CZECH-REPUBLIC | LEVEL3 | Proxy-registered route object | LEVEL3-MNT |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.