Data as of Nov 10, 2026
221.133.8.0/22
No anonymizer space · no proxy exits in 30 daysSai gon Postel Corporation
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 221.133.0.0/20 since Jun 2016 | AS7602 | Residential | 2 1 always on | Sai gon Postel Corporation |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 221.133.0.0/19 | 8,192 | SPT-VN | Sai gon Postel Corporation | ALLOCATED PORTABLE | — | hm-changed@ |
| └ 221.133.8.0/24 | 256 | dialup-NET | HCMRS01 (dialup) | ALLOCATED NON-PORTABLE | — | hm-changed@ |
| └ 221.133.9.0/24 | 256 | Hosting-NET | New Hosting | ALLOCATED NON-PORTABLE | — | hm-changed@ |
| └ 221.133.10.0/24 | 256 | Testnewservices-NET | Used for testing new services | ALLOCATED NON-PORTABLE | — | hm-changed@ |
| └ 221.133.11.0/24 | 256 | IP_ | IP-VPN cho cac PoP | ALLOCATED NON-PORTABLE | — | hm-changed@ |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
1,024 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Residential | 768 | 75% | 2 | |
| Hosting | 256 | 25% | 1 |
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
Covering aggregate above, the prefix's own history below
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 |
|---|---|---|---|---|---|
| 221.133.8.0/23 | AS7602 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Nov 4, 2017 |
| 221.133.8.0/23 | AS7602 | APNIC | SPT-VN | MAINT-VN-SPT | Sep 24, 2022 |
| 221.133.8.0/24 | AS7602 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Nov 4, 2017 |
| 221.133.8.0/24 | AS7602 | APNIC | SPT-VN | MAINT-VN-SPT | Sep 24, 2022 |
| 221.133.9.0/24 | AS7602 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Nov 4, 2017 |
| 221.133.9.0/24 | AS7602 | APNIC | SPT-VN | MAINT-VN-SPT | Sep 24, 2022 |
| 221.133.10.0/23 | AS7602 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Nov 4, 2017 |
| 221.133.10.0/23 | AS7602 | APNIC | SPT-VN | MAINT-VN-SPT | Sep 24, 2022 |
| 221.133.10.0/24 | AS7602 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Nov 4, 2017 |
| 221.133.10.0/24 | AS7602 | APNIC | SPT-VN | MAINT-VN-SPT | Sep 24, 2022 |
| 221.133.11.0/24 | AS7602 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Nov 4, 2017 |
| 221.133.11.0/24 | 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