174.133.0.0/16 - IBM Cloud (AS36351)
CIDR
174.133.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Armonk
RIR
ARIN
Status
allocated
Allocated
2008-06-17
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 174.133.0.0/16 | AS36351 SOFTLAYER - IBM Cloud | No ROA | Other IRR | 2026-10-11 |
More-Specific Announcements
1 more-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 174.133.116.0/22 | AS36351 SOFTLAYER - IBM Cloud | No ROA | - | 2026-10-11 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS36351 | Other IRR | MAINT-AS36351 | 2025-02-04 |
Transfer History
Registry transfers of 174.133.0.0/16, blocks inside it, or blocks containing it.
- 174.132.0.0/15M&A ·
- 174.132.0.0/15M&A ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 174.132.0.0/15 | M&A | |||
| 174.132.0.0/15 | M&A |
Origin ASN
AS36351
SOFTLAYER - IBM Cloud
Related Prefixes
Geolocation
Learn more
- RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
- RPKI validatorCheck ROA coverage for any prefix or ASN
- What is BGP?How prefixes are announced and routed
- More-specific prefixesGlossary: covering and more-specific routes
- IPv4 transfers in the ARIN regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/174.133.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/174.133.0.0/16" | jq
External Links