Data as of Nov 10, 2026
221.133.28.0/22
No anonymizer space · no proxy exits in 30 daysSai gon Postel Corporation
Network & registry
Origin network
AS7602
VN
- Name
- Sai gon Postel Corporation
- Type
- Internet provider
- Registered
- Aug 28, 2003
- Domain
- spt.vn
- Website
- www.spt.vn
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Nov 2025 · 1.0 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 221.133.0.0/19 | AS7602 | /24 | APNIC | RPKI valid |
IRR
Route objects on the exact prefix
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 221.133.28.0/23 | AS7602 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Nov 4, 2017 |
| 221.133.28.0/23 | AS7602 | APNIC | SPT-VN | MAINT-VN-SPT | Sep 24, 2022 |
| 221.133.28.0/24 | AS7602 | APNIC | SPT-VN | MAINT-VN-SPT | Sep 24, 2022 |
| 221.133.29.0/24 | AS7602 | APNIC | SPT-VN | MAINT-VN-SPT | Sep 24, 2022 |
| 221.133.30.0/23 | AS7602 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Nov 4, 2017 |
| 221.133.30.0/23 | AS7602 | APNIC | SPT-VN | MAINT-VN-SPT | Sep 24, 2022 |
| 221.133.30.0/24 | AS7602 | APNIC | SPT-VN | MAINT-VN-SPT | Sep 24, 2022 |
| 221.133.31.0/24 | AS7602 | APNIC | SPT-VN | MAINT-VN-SPT | Sep 24, 2022 |
Whois
Registration for this announcement
- Range
- 221.
133. 0. 0/ 19 - Netname
- SPT-VN
- Registrant
- Sai gon Postel Corporation
- Registrant country
- VN
- Organization
- Sai gon Postel Corporation
- Org country
- VN
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Sep 26, 2022
- Maintainer
- MAINT-VN-VNNIC
- RIR
- APNIC
- Country
- VN
- Delegated
- Aug 6, 2003
- Status
- assigned
Report abuse
Abuse contact
- hm-changed@
vnnic. vn - Name
- IRT-VNNIC-AP
- Handle
- IRT-VNNIC-AP