Data as of Nov 10, 2026
221.133.8.0/21
No anonymizer space · no proxy exits in 30 daysSai gon Postel Corporation
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 221.133.8.0/22 since Nov 2025 | AS7602 | Residential | Sai gon Postel Corporation | |
| 221.133.12.0/22 since Nov 2025 | AS7602 | Residential | Sai gon Postel Corporation via Core Network |
Registrations in this block
The registry's network records over this block, widest first, each 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@ |
| └ 221.133.12.0/22 | 1,024 | CoreNetwork-NET | Core Network | ALLOCATED NON-PORTABLE | — | hm-changed@ |
| └ 221.133.12.64/26 | 64 | DPA-NET | Dai Phuc An Media Corp. | ASSIGNED 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
2,048 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Residential | 1,728 | 84% | 4 | |
| Hosting | 256 | 13% | 1 | |
| Business | 64 | 3.1% | 1 |
Network & registry
Announced by
Covering announcement 221.133.0.0/20
- Prefix
- 221.133.0.0/20
- Announced by
- AS7602 Sai gon Postel Corporation
- Type
- Residential
- Proxy exits
- 2
- Always-on exits
- 1
- RPKI
- RPKI valid
- Netname
- SPT-VN
- Registrant
- Sai gon Postel Corporation
- RIR
- APNIC
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 221.133.0.0/20
221.133.0.0/20
Routing history
- Pattern
- Stable
- First seen
- Jun 2016
- Current origin since
- Jun 2016 · 10 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 |
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