Data as of Nov 10, 2026
221.133.6.0/23
1 residential-proxy exit · 30 daysSai gon Postel Corporation
Residential-proxy exits
Proxy exits
1
0.20% of its addresses · 30 days
Spread
1 of 2
/24s with at least one exit
Providers
2
selling exits here
Oct 11, 2026 – Nov 8, 2026
Exits seen per day
1 observation
Proxy providers listing exits
- IPFly
- PuraRoute
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 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@ |
| └ 221.133.6.0/27 | 32 | ASCENDAS-VN | Ascendas Services Vietnam Pte.,Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.6.32/27 | 32 | VTC-VN | VTC | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.7.0/24 | 256 | Hosting-NET | KH Colo Servers moi | ALLOCATED NON-PORTABLE | — | hm-changed@ |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
512 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Hosting | 256 | 50% | 1 | |
| Residential | 192 | 38% | 1 | |
| Business | 64 | 13% | 2 |
Network & registry
Announced by
Covering announcement 221.133.4.0/22
- Prefix
- 221.133.4.0/22
- Announced by
- AS7602 Sai gon Postel Corporation
- Type
- Residential
- Proxy 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
Covering aggregate above, the prefix's own history below
221.133.4.0/22
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 |
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