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Data as of Nov 7, 2026

203.248.0.0/17

512 anonymizer addresses · 1.6% · ISP proxy83 residential-proxy exits · 30 days

Sejong Networks

Announcement
this exact prefix
No RPKI
Announced by
AS9848
Type
Internet provider
82% of it

Residential-proxy exits

Proxy exits
83
0.25% of its addresses · 30 days
Spread
5 of 128
/24s with at least one exit
Providers
33
selling exits here
Oct 8, 2026 – Nov 6, 2026

Exits seen per day

2.1K observations
  • ISP proxy · anonymizer
  • Business
  • Internet provider

/24s with the most always-on exits

/24Always-on exitsProxy exits
203.248.106.0/24083
203.248.84.0/2405
203.248.117.0/2402
203.248.82.0/2401
203.248.92.0/2401

Proxy providers listing exits

  • BottingTools
  • BuyingProxy
  • ByteProxies
  • Byteful
  • DataImpulse
  • Datarama
  • EnigmaProxy
  • Evomi
  • FloppyData
  • GSocks
  • GeekProxy
  • GhostConnect
  • IPFly
  • Infatica
  • InfiniteProxies
  • LemonPrime
  • MangoProxy
  • NodeProxy
  • NovProxy
  • NovaProxy
  • PSBProxy
  • PacketStream
  • PrivateByte
  • Proxiware
  • Proxmint
  • Proxy4U
  • ProxyRack
  • PuraRoute
  • Q2IP
  • RH7Proxy
  • Shifter
  • VantageProxies
  • VitalExclusive
IPv4 market

Path

1 · Holder
Sejong Networks
2 · Leased from
not leased
3 · Announced by
AS9848 Sejong Networks
since May 2005 · 21.5 yr ago
4 · Use
Proxy providersnamed LumiProxy
Internet provider

Operators, sellers and brokers

Proxy providers

NameParentIn 203.248.0.0/17/24s
LumiProxy
5121.6%
2

Lineage

How this block came to its use, oldest first. The whole IPv4 market →

203.248.0.0/17

From the registry to its use

  1. Jun 4, 2004
    Route object
    AS9318 SK Broadband Co Ltd
    REACH route object for AS9318 SK Broadband Co Ltd, maintainer MAINT-REACH-NOC
    203.248.116.0/22
  2. May 9, 2005– today
    Announced
    AS9848 Sejong Networks
    Internet provider
  3. Aug 19, 2005
    Route object
    AS9848 Sejong Networks
    REACH route object for AS9848 Sejong Networks, maintainer MAINT-REACH-NOC
  4. Aug 22, 2006
    Route object
    AS23584 Pusan Cable TV System Co., Ltd.
    RADB route object for AS23584 Pusan Cable TV System Co., Ltd., maintainer MAINT-AS3786
    203.248.8.0/22
  5. Feb 1, 2010
    Route object
    AS9578 Cheiljedang.Co.Inc.
    RADB route object for AS9578 Cheiljedang.Co.Inc., maintainer MAINT-AS4637
    203.248.116.0/22
  6. Sep 1, 2011
    Route object
    AS9848 Sejong Networks
    RADB route object for AS9848 Sejong Networks, maintainer MAINT-AS4766
    203.248.66.0/24
  7. Dec 29, 2017
    Route object
    AS9848 Sejong Networks
    RADB route object for AS9848 Sejong Networks, maintainer MAINT-AS4670
  8. Dec 31, 2024
    Route object
    AS38106 Korea Security Technology Co., Ltd.
    RADB route object for AS38106 Korea Security Technology Co., Ltd., maintainer MAINT-AS4670
    203.248.8.0/22
  9. today
    Registry record
    Sejong Networks
    ALLOCATED PORTABLE
    203.248.0.0/17
  10. today
    Used
    LumiProxy
    Proxy seller

Announcements

Nesting

More-specifics by size

Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific

Announcements inside

PrefixOriginTypeAnonymizer addressesOperatorProxy exitsHolderRPKI
203.248.16.0/20
since Apr 2017
AS9952HostingSejong Networks
203.248.44.0/24
since Feb 2010
AS18300BusinessSejong Networks
203.248.67.0/25AS10167BusinessSejong Networks
203.248.80.0/20
since Jan 2025
AS9848Internet provider51213%ISP proxyProxy providerssold by LumiProxy7Sejong Networks
203.248.82.0/24
since Oct 22, 2026
AS9848Internet provider1Sejong Networks
203.248.94.0/24
since May 2026
AS9848Internet providerSejong Networks
203.248.116.0/24
since May 2005
AS9578BusinessSejong Networks
203.248.117.0/24
since May 2005
AS9578Business2Sejong Networks
203.248.118.0/24
since May 2005
AS9578BusinessSejong Networks
203.248.119.0/24
since May 2005
AS9578BusinessSejong Networks

Composition

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

Announced space

Address share

Announced space

Types across the prefix

32,768 addresses
TypeAddressesShareRanges
Internet provider26,75282%12
Hosting4,09613%1
Business1,4084.3%6
ISP proxyanonymizer5121.6%2

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS9848

KR
Name
Sejong Networks
Type
Internet provider
Registered
Feb 4, 2000
Domain
sejongnetworks.com
Website
en.sejongnetworks.com/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed