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Data as of Nov 10, 2026

221.133.18.0/23

4 residential-proxy exits · 30 days

Sai gon Postel Corporation

Announcement
221.133.16.0/22
RPKI valid
Announced by
AS7602
Type
Residential
Risk
0 / 100 · Low

Residential-proxy exits

Proxy exits
4
0.78% of its addresses · 30 days
Spread
2 of 2
/24s with at least one exit
Providers
18
selling exits here
Oct 11, 2026 – Nov 8, 2026

Exits seen per day

16 observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
221.133.18.0/2403
221.133.19.0/2401

Proxy providers listing exits

  • AnyIP
  • ByteProxies
  • Byteful
  • FastProxy
  • FlexyProxies
  • FloppyData
  • GSocks
  • Geonix
  • GonzoProxy
  • Infatica
  • LemonBright
  • MangoProxy
  • NodeProxy
  • Proxy-Seller
  • Shifter
  • Thordata
  • ThunderProxy
  • VitalExclusive

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
221.133.0.0/198,192SPT-VNSai gon Postel CorporationALLOCATED PORTABLE—hm-changed@vnnic.vn
└ 221.133.16.0/221,024POPHanoi-NETISP tai POP Ha NoiALLOCATED NON-PORTABLE—hm-changed@vnnic.vn

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Announced by

Covering announcement 221.133.16.0/22

Prefix
221.133.16.0/22
Announced by
AS7602 Sai gon Postel Corporation
Type
Residential
Proxy exits
6
RPKI
RPKI valid
Netname
POPHanoi-NET
Registrant
ISP tai POP Ha Noi
RIR
APNIC
IPv4 market

Holder

Holder in the market →
Organization
Sai gon Postel Corporation
Range
221.133.0.0/19
Registration type
ALLOCATED PORTABLE
Reallocated to
ISP tai POP Ha Noi
Reallocated range
221.133.16.0/22
Reallocation type
ALLOCATED NON-PORTABLE
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