37.252.192.0/21 - BGP Prefix
IPv4RIPE NCCallocated RPKI Valid
CIDR
37.252.192.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇸🇬 Singapore
City
Singapore
RIR
RIPE NCC
Status
allocated
Allocated
2012-04-20
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
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| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not announced as a whole. Parts of it are announced as more-specific prefixes, see below. | ||||
More-Specific Announcements
3 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 37.252.192.0/24 | AS16509 AMAZON-02 - Amazon.com, Inc. | Valid | - | 2026-10-16 |
| 37.252.193.0/24 | AS16509 AMAZON-02 - Amazon.com, Inc. | Valid | - | 2026-10-16 |
| 37.252.194.0/24 | AS16509 AMAZON-02 - Amazon.com, Inc. | Valid | - | 2026-10-16 |
RPKI ROAs
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS31716 | RIPE | lir-uk-quberesearch-1-MNT | 2025-02-13 |
Transfer History
Registry transfers of 37.252.192.0/21, blocks inside it, or blocks containing it.
- 37.252.192.0/21Transfer ·
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 RIPE NCC regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/37.252.192.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/37.252.192.0/21" | jq
External Links