Data as of Nov 10, 2026
221.121.28.0/23
No anonymizer space · no proxy exits in 30 daysSai 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 |
|---|---|---|---|---|---|---|
| 221.121.0.0/18 | 16,384 | SPT-VN | Sai gon Postel Corporation | ALLOCATED PORTABLE | — | hm-changed@ |
| └ 221.121.24.0/21 | 2,048 | ADSL-NET | ADSL service | ALLOCATED NON-PORTABLE | — | hm-changed@ |
Network & registry
Announced by
Covering announcement 221.121.0.0/18
- Prefix
- 221.121.0.0/18
- Announced by
- AS7602 Sai gon Postel Corporation
- Type
- Residential
- Proxy exits
- 2
- 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 221.121.0.0/18
221.121.0.0/18
Routing history
- Pattern
- Stable
- First seen
- Jan 2006
- Current origin since
- Oct 2025 · 1.1 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 221.121.0.0/18 | AS7602 | /24 | APNIC | RPKI valid |
Whois
Registration for this announcement
- Range
- 221.
121. 0. 0/ 18 - 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
- May 20, 2005
- Status
- assigned
Report abuse
Abuse contact
- hm-changed@
vnnic. vn - Name
- IRT-VNNIC-AP
- Handle
- IRT-VNNIC-AP