166.133.192.0/18
Announced by AS64011. RPKI invalid Seen by 0 of our 5 looking glass sessions.
Summary
What the table says about 166.133.192.0/18
Prefix
Origin
RPKI
RPKI invalid
Size
16,384 addresses
Less specific
More specifics
0
IRR route objects
0 exact, 5 covering
In RouteViews
2026-10-12 20:02 UTC
RPKI
Route origin authorizations
The covering ROA authorizes a different AS to originate this prefix. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 166.132.0.0/14 | /24 | AS20057 ATT-MOBILITY-LLC-AS20057 | ARIN |
| 166.128.0.0/13 | /13 | AS7018 ATT-INTERNET4 | ARIN |
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 |
|---|---|---|---|---|
| 166.133.0.0/16 covering | AS20057 ATT-MOBILITY-LLC-AS20057 | LEVEL3 | An ATTWS network | AWS-MNT |
| 166.132.0.0/15 covering | AS20057 ATT-MOBILITY-LLC-AS20057 | LEVEL3 | A Cingular Network | AWS-MNT |
| 166.132.0.0/14 covering | AS20057 ATT-MOBILITY-LLC-AS20057 | ARIN | AT&T Enterprises, LLC | MNT-AEL-360 |
| 166.132.0.0/14 covering | AS20057 ATT-MOBILITY-LLC-AS20057 | LEVEL3 | A Cingular Network | AWS-MNT |
| 166.128.0.0/13 covering | AS7018 ATT-INTERNET4 | ARIN | AT&T Enterprises, LLC | MNT-AEL-360 |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.