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Autonomous System

AS17857

SK Broadband Co Ltd

Announced IPs
145,408
CIDR prefixes
18
ASN
AS17857

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

70/100
Moderate
How this score is built
  • Baseline (neutral) 65
  • Isp allocation +5
  • Trust score 70 / 100

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

About SK Broadband

SK Broadband, Inc. is a Seoul-based telecommunications company and a wholly owned subsidiary of SK Telecom.

Founded
1997
Headquarters
Seoul
Industry
telecommunications
Parent
SK Telecom

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS17857 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
122.254.181.0/24 101,374 2026-11-15 00:08:24
211.33.106.0/24 98,913 2026-11-15 00:08:24
27.115.193.0/24 98,114 2026-11-15 00:08:24
27.117.16.0/22 98,024 2026-11-15 00:08:24
116.93.198.0/24 98,018 2026-11-15 00:08:24
114.111.213.0/24 97,972 2026-11-15 00:08:24
27.117.84.0/24 97,959 2026-11-15 00:08:24
27.115.192.0/18 97,949 2026-11-15 00:08:24
116.93.199.0/24 97,881 2026-11-15 00:08:24
114.111.214.0/24 97,878 2026-11-15 00:08:24
114.111.247.0/24 97,841 2026-11-15 00:08:24
27.117.48.0/23 97,840 2026-11-15 00:08:24
114.111.192.0/18 97,748 2026-11-15 00:08:24
114.111.244.0/23 97,738 2026-11-15 00:08:24
27.117.116.0/22 97,727 2026-11-15 00:08:24
27.115.195.0/24 97,723 2026-11-15 00:08:24
27.117.8.0/21 97,705 2026-11-15 00:08:24
116.93.192.0/18 97,699 2026-11-15 00:08:24
27.117.0.0/17 97,692 2026-11-15 00:08:24
116.93.196.0/23 97,677 2026-11-15 00:08:24
121.50.232.0/21 97,677 2026-11-15 00:08:24
27.117.104.0/21 97,654 2026-11-15 00:08:24
27.117.88.0/21 97,647 2026-11-15 00:08:24
114.111.210.0/23 97,640 2026-11-15 00:08:24
121.50.224.0/19 97,634 2026-11-15 00:08:24
114.111.248.0/24 97,625 2026-11-15 00:08:24
122.254.128.0/17 97,589 2026-11-15 00:08:24
27.117.87.0/24 97,540 2026-11-15 00:08:24
114.111.216.0/24 97,530 2026-11-15 00:08:24
121.50.240.0/24 97,526 2026-11-15 00:08:24
116.93.194.0/23 97,525 2026-11-15 00:08:24
27.117.80.0/23 97,496 2026-11-15 00:08:24
27.115.196.0/22 97,476 2026-11-15 00:08:24
27.117.54.0/24 97,474 2026-11-15 00:08:24
27.115.217.0/24 97,473 2026-11-15 00:08:24
27.115.211.0/24 97,465 2026-11-15 00:08:24
27.117.20.0/23 97,461 2026-11-15 00:08:24
114.111.206.0/24 97,459 2026-11-15 00:08:24
114.111.209.0/24 97,456 2026-11-15 00:08:24
27.117.83.0/24 97,455 2026-11-15 00:08:24
27.115.207.0/24 97,449 2026-11-15 00:08:24
27.115.214.0/24 97,441 2026-11-15 00:08:24
114.111.242.0/24 97,439 2026-11-15 00:08:24
116.93.228.0/23 97,437 2026-11-15 00:08:24
27.115.212.0/24 97,419 2026-11-15 00:08:24
27.117.120.0/23 97,418 2026-11-15 00:08:24
27.115.213.0/24 97,418 2026-11-15 00:08:24
114.111.202.0/23 97,415 2026-11-15 00:08:24
27.115.204.0/24 97,412 2026-11-15 00:08:24
114.111.243.0/24 97,406 2026-11-15 00:08:24

Showing top 50 of 247 announced prefixes by sample volume.

Frequently Asked Questions

What is AS17857?

AS17857 is an Autonomous System Number assigned to SK Broadband Co Ltd. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS17857 announce?

AS17857 announces 145.4K IPv4 addresses distributed across 18 routed CIDR prefixes. The network is registered in South Korea.

Who operates AS17857?

AS17857 is operated by SK Broadband Co Ltd. The organization is based in South Korea. You can view all IP ranges and related ASNs on the organization page.

What country is AS17857 registered in?

AS17857 is registered in South Korea. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-11-15 00:39:05 UTC
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