Data as of Nov 10, 2026
221.133.3.0/24
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 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@ |
| └ 221.133.3.0/29 | 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 |
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
256 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 216 | 84% | 22 | |
| Residential | 32 | 13% | 2 | |
| Mobile | 8 | 3.1% | 1 |
Network & registry
Announced by
Covering announcement 221.133.0.0/22
- Prefix
- 221.133.0.0/22
- Announced by
- AS7602 Sai gon Postel Corporation
- Type
- Residential
- Proxy exits
- 1
- 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
Covering aggregate above, the prefix's own history below
221.133.0.0/22
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