$ query “AS9848” --type=asn → 1 result(s)

AS9848 — SEJONGTELECOM-AS

SEJONG NETWORKS

AS9848 is a major transit provider operated by SEJONG NETWORKS, based in South Korea. The network announces a solid 990 720 IPv4 addresses, including a /16. Supports IPv6.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #5 in South Korea — Top 10 by reach within country

Basic Information

Country
🇰🇷 South Korea
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Last Changed
March 04, 2026
Last Seen
March 04, 2026

Prefix Summary

IPv4 Prefixes (raw / aggregated)
169 / 74
IPv6 Prefixes (raw / aggregated)
2 / 2
IPv4 Addresses
990 720
Largest IPv4 Prefix
/16 (65 536 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇰🇷 KR (83 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Good — 2 flagged IPs out of 990 720 total (0.00%)

Connectivity Summary

Upstream Providers
10 upstream autonomous systems providing transit
Peers
15 autonomous systems exchanging traffic without transit fees
Downstream Customers
52 downstream autonomous systems buying transit
Degree
77 unique BGP neighbors (providers + customers + peers)
Reach
5 240 — customer cone size measuring network influence
Degree Rank
#2 196
Reach Rank
#528
Country Rank
#5

Upstream Providers (10)

Prefix Lists

IPv4 Prefixes (169 total)

  • 203.227.0.0/16 (65 536 addresses)
  • 203.231.0.0/16 (65 536 addresses)
  • 210.109.0.0/16 (65 536 addresses)
  • 210.122.0.0/16 (65 536 addresses)
  • 211.239.0.0/16 (65 536 addresses)
  • 61.100.0.0/17 (32 768 addresses)
  • 61.109.128.0/17 (32 768 addresses)
  • 203.235.0.0/17 (32 768 addresses)
  • 203.238.0.0/17 (32 768 addresses)
  • 203.239.0.0/17 (32 768 addresses)
  • 203.243.128.0/17 (32 768 addresses)
  • 203.248.0.0/17 (32 768 addresses)
  • 210.103.128.0/17 (32 768 addresses)
  • 210.112.0.0/17 (32 768 addresses)
  • 210.116.128.0/17 (32 768 addresses)
  • 210.121.0.0/17 (32 768 addresses)
  • 210.126.128.0/17 (32 768 addresses)
  • 61.100.128.0/18 (16 384 addresses)
  • 61.250.64.0/18 (16 384 addresses)
  • 203.235.128.0/18 (16 384 addresses)
  • 203.236.128.0/18 (16 384 addresses)
  • 210.98.64.0/18 (16 384 addresses)
  • 210.116.0.0/18 (16 384 addresses)
  • 210.127.64.0/18 (16 384 addresses)
  • 210.127.128.0/18 (16 384 addresses)
  • 61.252.160.0/19 (8 192 addresses)
  • 203.255.128.0/19 (8 192 addresses)
  • 211.36.192.0/19 (8 192 addresses)
  • 211.39.160.0/19 (8 192 addresses)
  • 211.43.160.0/19 (8 192 addresses)
  • 211.56.192.0/19 (8 192 addresses)
  • 211.111.128.0/19 (8 192 addresses)
  • 211.115.192.0/19 (8 192 addresses)
  • 211.189.160.0/19 (8 192 addresses)
  • 211.236.224.0/19 (8 192 addresses)
  • 211.238.0.0/19 (8 192 addresses)
  • 211.255.224.0/19 (8 192 addresses)
  • 61.97.64.0/20 (4 096 addresses)
  • 61.97.96.0/20 (4 096 addresses)
  • 64.23.64.0/20 (4 096 addresses)
  • 211.116.176.0/20 (4 096 addresses)
  • 211.116.192.0/20 (4 096 addresses)
  • 211.172.96.0/20 (4 096 addresses)
  • 66.232.136.0/21 (2 048 addresses)
  • 202.30.232.0/21 (2 048 addresses)
  • 66.232.144.0/22 (1 024 addresses)
  • 202.30.240.0/22 (1 024 addresses)
  • 203.240.144.0/22 (1 024 addresses)
  • 203.255.116.0/22 (1 024 addresses)
  • 202.30.212.0/23 (512 addresses)

IPv6 Prefixes (2 total)

  • 2001:3a8::/32
  • 2001:cf0::/32