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Data as of Nov 10, 2026

221.133.12.0/24

No anonymizer space · no proxy exits in 30 days

Sai gon Postel Corporation

Announcement
221.133.12.0/22
RPKI valid
Announced by
AS7602
Type
Residential
75% of it

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
221.133.0.0/20
since Jun 2016
AS7602Residential2
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.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
221.133.0.0/198,192SPT-VNSai gon Postel CorporationALLOCATED PORTABLE—hm-changed@vnnic.vn
└ 221.133.12.0/221,024CoreNetwork-NETCore NetworkALLOCATED NON-PORTABLE—hm-changed@vnnic.vn
└ 221.133.12.64/2664DPA-NETDai Phuc An Media Corp.ASSIGNED NON-PORTABLE—hm-changed@vnnic.vn

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

256 addresses
TypeAddressesShareRanges
Residential19275%2
Business6425%1

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Announced by

Covering announcement 221.133.12.0/22

Prefix
221.133.12.0/22
Announced by
AS7602 Sai gon Postel Corporation
Type
Residential
RPKI
RPKI valid
Netname
CoreNetwork-NET
Registrant
Core Network
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
Core Network
Reallocated range
221.133.12.0/22
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