Data as of Nov 10, 2026
221.133.0.0/20
2 residential-proxy exits · 30 daysSai gon Postel Corporation
Residential-proxy exits
Proxy exits
2
0.05% of its addresses · 30 days
Always-on exits
1
50% of its exits
Spread
2 of 16
/24s with at least one exit
Providers
21
selling exits here
Oct 11, 2026 – Nov 8, 2026
Exits seen per day
1.3K observations
- Residential
- Hosting
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 221.133.2.0/24 | 1 | 1 | |
| 221.133.7.0/24 | 0 | 1 |
Proxy providers listing exits
- 2Captcha
- Ake.net
- BirdProxies
- BottingTools
- ByteProxies
- Byteful
- FlashProxy
- FloppyData
- GonzoProxy
- IPFly
- Infatica
- LemonBright
- Novada
- Proxy-Seller
- ProxyEmpire
- ProxyWing
- Proxyma
- PuraRoute
- Shifter
- Thordata
- ThunderProxy
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 221.133.0.0/22 since Nov 2025 | AS7602 | Residential | 1 1 always on | Sai gon Postel Corporation | |
| 221.133.0.0/24 since Nov 2025 | AS7602 | Residential | Sai gon Postel Corporation via IXP tai HCM | ||
| 221.133.1.0/24 since Nov 2025 | AS7602 | Residential | Sai gon Postel Corporation via ISP tai HCM | ||
| 221.133.4.0/22 since Nov 2025 | AS7602 | Residential | 1 | Sai gon Postel Corporation | |
| 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 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@ |
| └ 221.133.0.0/24 | 256 | IXPHCM-NET | IXP tai HCM | ALLOCATED NON-PORTABLE | — | hm-changed@ |
| └ 221.133.1.0/24 | 256 | ISPHCM-NET | ISP tai HCM | ALLOCATED NON-PORTABLE | — | hm-changed@ |
| └ 221.133.2.20/30 | 4 | SPT-NET | Saigon Postel Corp. | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.28/30 | 4 | FAIRFIELDVN-VN | CTY FAIRFIELD Via??t Nam | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.32/30 | 4 | VNMOTORS-VN | Vietnam Motors Co., Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.36/30 | 4 | STS-VN | SPT Corp. | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.40/30 | 4 | SOMOTNET-VN | somotNET Co., Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.44/30 | 4 | AULAC-NET | Cong ty Co phan Chung khoan au Lac | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.52/30 | 4 | SEDONASUITE-NET | Sedona Suite Hotel | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.56/30 | 4 | SOCIETE_ | CA?ng ty TA i chA?nh Via??t Societe General | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.60/30 | 4 | SOMOTNET-VN | somotNET Co., Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.68/30 | 4 | SYMRISE-VN | Symrise Pte. Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.72/30 | 4 | CMC-VN | CMC Corp. | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.76/30 | 4 | ASCENDAS-VN | Ascendas Services Vietnam Pte.,Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.80/30 | 4 | sig-VN | SIG Co Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.88/30 | 4 | BrainWorksVN-NET | BrainWorks Vietnam Co., Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.92/30 | 4 | LOTTEMART-NET | Lotte Mart | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.96/30 | 4 | HoaiAnhLe-NET | Hoai Anh Le Co., Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.104/30 | 4 | VTC-NET | VTC | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.108/30 | 4 | DAIKO_ | Daiko Vietnam | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.112/30 | 4 | SFONE-NET | S-Telecom | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.116/30 | 4 | dongabank-NET | Dong A Bank | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.120/30 | 4 | STS-NET | SPT Corp. | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.128/30 | 4 | IPT-NET | IP Telecom Center | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.196/30 | 4 | VNGT-VN | Trung tA?m Via? n ThA?ng Tha?? Ha?? Ma??i | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.200/30 | 4 | VNGT-NET | Trung tA?m Vien Thong The He Moi | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.204/30 | 4 | SCTV-NET | SCTV | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.208/30 | 4 | VIETUU-NET | Viet Uu Co., Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.244/30 | 4 | IKEA_ | VPA?D IKEA Asia Pacific | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.248/30 | 4 | SFONE-NET | S-Telecom | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.2.252/30 | 4 | LEGEND-NET | Legend Hotel | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.0/29 | 8 | FAIRFIELDVN-NET | CTY FAIRFIELD Via??t Nam | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.8/29 | 8 | AULAC-NET | Cong ty Co phan Chung khoan au Lac | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.16/29 | 8 | SYMRISE-VN | Symrise Pte. Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.24/29 | 8 | SFONE-VN | S-Telecom | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.32/29 | 8 | ALCATEL_ | unknown | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.40/29 | 8 | mobileshop-net | 549 Le Hong Phong Mobile and Telecom Equipment Shop | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.48/29 | 8 | PMH-NET | Phu My Hung Corp | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.56/29 | 8 | VNMOTORS-VN | Vietnam Motors Co., Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.64/28 | 16 | SPT-NET | Saigon Postel Corp. | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.64/29 | 8 | spt177-net | 177 Telephone Center | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-NET |
| └ 221.133.3.96/29 | 8 | PHOTRON-NET | Photron Technology Center | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.104/29 | 8 | sofitelplaza-NET | Sofitel Plaza Company | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.112/28 | 16 | MOTIVES_ | VPA?D Motives Far East | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.112/29 | 8 | AIA-NET | American International Group | ASSIGNED NON-PORTABLE | — | hm-changed@ via MOTIVES_FAR_EAST-NET |
| └ 221.133.3.120/29 | 8 | thanhphong-net | Thanh Phong Mobile and Telecom Equipment Shop | ASSIGNED NON-PORTABLE | — | hm-changed@ via MOTIVES_FAR_EAST-NET |
| └ 221.133.3.128/28 | 16 | HONGBANG-VN | Hong Bang University | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.144/28 | 16 | CMC-VN | CMC Corp. | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.160/29 | 8 | HOAMATTROI-NET | Hoa Mat Troi | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.176/29 | 8 | HoaiAnhLe-VN | Hoai Anh Le Co., Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221. | 10 | sig-net | SIG Co Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.192/29 | 8 | SOCIETE_ | Cong ty Tai chinh Viet Societe General | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.200/29 | 8 | norskeveritas-NET | Norske Veritas Knit Company | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.208/29 | 8 | microsoftvn-net | Microsoft Viet Nam Company | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.216/29 | 8 | VIETUU-VN | Viet Uu Co., Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.3.224/27 | 32 | SEDONASUITE-NET | Sedona Suite Hotel | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.4.0/27 | 32 | dongabank-NET | Dong A Bank | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.4.32/27 | 32 | SOMOTNET-VN | somotNET Co., Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.4.64/27 | 32 | IPT-NET | IP Telecom Center | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.4.96/28 | 16 | SPT-NET | Saigon Postel Corp. | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.4.160/27 | 32 | SAIGONVIEW-NET | SaigonView | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.4.192/27 | 32 | LEGEND-NET | Legend Hotel | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.4.224/28 | 16 | STS-VN | SPT Corp. | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.4.240/29 | 8 | BrainWorksVN-VN | BrainWorks Vietnam Co., Ltd | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.4.248/29 | 8 | LOTTEMART-VN | Lotte Mart | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.5.0/29 | 8 | cuchaiquantphcm-net | Cuc hai quan thanh pho HCM | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.5.8/29 | 8 | mobileshop-net | 55B Pham Ngu Lao Mobile and Telecom Equipment Shop | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.5.16/28 | 16 | IKEA_ | VPA?D IKEA Asia Pacific | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.5.80/29 | 8 | DPA-vn | Dai Phuc An Media Corp. | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.5.96/27 | 32 | SFONE-NET | S-Telecom | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 221.133.5.128/27 | 32 | VNGT-VN | Trung tA?m Via? n ThA?ng Tha?? Ha?? Ma??i | ASSIGNED NON-PORTABLE | — | hm-changed@ via SPT-VN |
| └ 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@ |
| └ 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@ |
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
4,096 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Residential | 2,824 | 69% | 21 | |
| Business | 744 | 18% | 66 | |
| Hosting | 512 | 13% | 2 | |
| Mobile | 16 | 0.39% | 2 |
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
- 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 |
IRR
Route objects on the exact prefix
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 221.133.0.0/21 | AS7602 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Nov 4, 2017 |
| 221.133.0.0/21 | AS7602 | APNIC | SPT-VN | MAINT-VN-SPT | Sep 24, 2022 |
| 221.133.8.0/21 | AS7602 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Nov 4, 2017 |
| 221.133.8.0/21 | 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