63.133.128.0/18
🇺🇸IPv4ARINallocatedMOASNo ROA
CIDR
63.133.128.0/18
IP Version
IPv4
Addresses
16.3K
Mask
/18 (255.255.192.0)
Country
🇺🇸 United States
City
Dallas
RIR
ARIN
Status
allocated
Allocated
9/11/2003
Announced BGP Routes
2 of 2 routesMOAS - 2 origin ASNs
RPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 63.133.128.0/18 | AS3257GTT-BACKBONE GTT Communications Inc. | No ROA | ARIN | 5/31/2026 |
| 63.133.128.0/18 | AS20077IPNETZONE-ASN - IPNetZone | No ROA | ARINRADB | 5/31/2026 |
Covering Prefix
8 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 63.133.152.0/21 | AS20077IPNETZONE-ASN - IPNetZone | No ROA | — | 5/31/2026 |
| 63.133.163.0/24 | AS20077IPNETZONE-ASN - IPNetZone | No ROA | — | 5/31/2026 |
| 63.133.172.0/24 | AS20077IPNETZONE-ASN - IPNetZone | No ROA | — | 5/31/2026 |
| 63.133.175.0/24 | AS20077IPNETZONE-ASN - IPNetZone | No ROA | — | 5/31/2026 |
| 63.133.185.0/24 | AS20077IPNETZONE-ASN - IPNetZone | No ROA | — | 5/31/2026 |
| 63.133.161.0/24 | AS20077IPNETZONE-ASN - IPNetZone | No ROA | — | 5/31/2026 |
| 63.133.162.0/24 | AS20077IPNETZONE-ASN - IPNetZone | No ROA | — | 5/31/2026 |
| 63.133.165.0/24 | AS27596REDWIRE - VoloNet Technologies, Inc | No ROA | — | 5/31/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/63.133.128.0/18Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/63.133.128.0/18" | jq
External Links