IP address 211.235.129.54

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Overview

LocationCity, region and country where this IP is located.
Seoul, KR
ASNThe autonomous system that announces this IP on the internet.
AS9644 — SK Telecom Co., Ltd.
TimezoneThe IANA time zone at this IP's location.
Asia/Seoul
NetworkThe routed network block (CIDR) that contains this IP.
211.235.128.0/19
CompanyThe organization this IP is assigned to.
SK Telecom Co., Ltd.
Abuse contactWhere to report spam, attacks or other misuse from this IP.
hostmaster@nic.or.kr

Associated location

Seoul

South Korea (KR)

Powered byIP Geolocation API

City
Seoul
District / county
Yongsan
State / province
Seoul
Country
South Korea
Postal code
04620
Coordinates
37.55886, 126.99989

South Korea

37.55886, 126.99989

© Google Maps

Threat score

0/100 Low risk

Powered byIP Security API

Flags detected

  • AnonymousTraffic from this IP hides its real origin (VPN, proxy or Tor).Not Detected
  • Known AttackerThis IP has been seen in attacks such as brute force, scanning or exploits.Not Detected
  • SpamThis IP has been reported for sending spam.Not Detected
  • TorThis IP is a Tor exit node.Not Detected
  • ProxyThis IP is an open, public or commercial proxy.Not Detected
    Residential ProxyA home or mobile connection resold as a proxy exit.Not Detected
  • BotAutomated traffic such as crawlers or scrapers comes from this IP.Not Detected
    Known Good BotThis bot is a known, legitimate crawler, such as a search engine.Not Detected
  • VPNThis IP belongs to a VPN service.Not Detected
  • Cloud ProviderThis IP belongs to a cloud or hosting provider's data center.Not Detected
  • Corporate GatewayA shared egress gateway used by a company's network.Not Detected
  • RelayThis IP is a relay exit, such as iCloud Private Relay.Not Detected

No anonymity signals

This IP is not flagged as an attacker, spam source, Tor exit, VPN, proxy, relay, bot, cloud provider or corporate gateway.

Abuse contact

IRT-KRNIC-KR

hostmaster@nic.or.kr

Powered byIP Abuse Contact API

Name
IRT-KRNIC-KR
Organization
—
Network
211.235.128.0/18
Country
KR
Kind
group
Address
Seocho-ro 398, Seocho-gu, Seoul, Korea
Emails
hostmaster@nic.or.kr
Phone numbers
+82 2-1599-0011

Autonomous system

AS9644

SK Telecom Co., Ltd.

Powered byIP to ASN Database

ASN
AS9644
Country
KR
Domain
sktelecom.com
Regional registry
KRNIC
Organization
SK Telecom Co., Ltd.
Type
Internet service provider (ISP)
Allocated on
1999-08-18

Organization

SK Telecom Co., Ltd.

KRNIC AS9644 sktelecom.com ISP KR

Associated company

SK Telecom Co., Ltd.

ISP · sktelecom.com

Powered byIP to Company Database

Name
SK Telecom Co., Ltd.
Type
Internet service provider (ISP)
Domain
sktelecom.com

Network route

211.235.128.0/19

Powered byIP Geolocation API

Hostname
211.235.129.54
Route
211.235.128.0/19
Connection type
—
Anycast
No
CDN
No
CDN provider
—

Time zone

Asia/Seoul

2026-10-22 07:11

Powered byTime Zone API

Offset from UTC
9.0
Standard time zone
Korean Standard Time
Standard abbreviation
KST
Daylight saving time
No
DST savings (hours)
0
Observing DST now
No
Seoul

Asia/Seoul

UTC9.0

User agent string

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

Powered byUser Agent API

  • BrowserClaudeBotver. 1.0
  • EngineClaudeBotver. 1.0
  • Operating systemCloud
  • DeviceRobotAnthropic ClaudeBot
  • ArchitectureUnknown
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
Response 
{
  "ip" : "211.235.129.54",
  "hostname" : "211.235.129.54",
  "location" : {
    "district" : "Yongsan",
    "city" : "Seoul",
    "locality" : "Seoul",
    "zipcode" : "04620",
    "latitude" : "37.55886",
    "longitude" : "126.99989",
    "continent_code" : "AS",
    "continent_name" : "Asia",
    "country_code2" : "KR",
    "country_code3" : "KOR",
    "country_name" : "South Korea",
    "country_name_official" : "Republic of Korea",
    "country_capital" : "Seoul",
    "state_prov" : "Seoul",
    "state_code" : "KR-11",
    "accuracy_radius" : "12.132",
    "confidence" : "high",
    "dma_code" : "",
    "is_eu" : false,
    "country_flag" : "https://ipgeolocation.io/static/flags/kr_64.png",
    "geoname_id" : "6800519",
    "country_emoji" : "🇰🇷"
  },
  "country_metadata" : {
    "tld" : ".kr",
    "languages" : [ "ko-KR", "en" ],
    "calling_code" : "+82"
  },
  "network" : {
    "route" : "211.235.128.0/19",
    "connection_type" : "",
    "is_anycast" : false,
    "is_cdn" : false,
    "cdn_provider_name" : ""
  },
  "currency" : {
    "code" : "KRW",
    "name" : "Won",
    "symbol" : "₩"
  },
  "asn" : {
    "organization" : "SK Telecom Co., Ltd.",
    "country" : "KR",
    "type" : "ISP",
    "domain" : "sktelecom.com",
    "rir" : "KRNIC",
    "as_number" : "AS9644",
    "date_allocated" : "1999-08-18"
  },
  "company" : {
    "name" : "SK Telecom Co., Ltd.",
    "type" : "ISP",
    "domain" : "sktelecom.com"
  },
  "security" : {
    "threat_score" : 0,
    "is_tor" : false,
    "is_proxy" : false,
    "proxy_provider_names" : [ ],
    "proxy_confidence_score" : 0,
    "proxy_last_seen" : "",
    "is_residential_proxy" : false,
    "is_vpn" : false,
    "vpn_provider_names" : [ ],
    "vpn_confidence_score" : 0,
    "vpn_last_seen" : "",
    "is_relay" : false,
    "relay_provider_name" : "",
    "is_anonymous" : false,
    "is_known_attacker" : false,
    "is_bot" : false,
    "bot_confidence_score" : 0,
    "bot_operator_name" : "",
    "bot_type" : "",
    "is_known_good_bot" : false,
    "bot_last_seen" : "",
    "is_spam" : false,
    "is_cloud_provider" : false,
    "cloud_provider_name" : "",
    "is_corporate_gateway" : false,
    "corporate_gateway_type" : "",
    "corporate_gateway_provider_name" : ""
  },
  "abuse" : {
    "route" : "211.235.128.0/18",
    "country" : "KR",
    "name" : "IRT-KRNIC-KR",
    "organization" : "",
    "kind" : "group",
    "address" : "Seocho-ro 398, Seocho-gu, Seoul, Korea",
    "emails" : [ "hostmaster@nic.or.kr" ],
    "phone_numbers" : [ "+82215990011" ]
  },
  "time_zone" : {
    "name" : "Asia/Seoul",
    "offset" : 9.0,
    "offset_with_dst" : 9.0,
    "current_time" : "2026-10-22 07:11:22.970+0900",
    "current_time_unix" : 1.79262068297E9,
    "current_tz_abbreviation" : "KST",
    "current_tz_full_name" : "Korean Standard Time",
    "standard_tz_abbreviation" : "KST",
    "standard_tz_full_name" : "Korean Standard Time",
    "is_dst" : false,
    "dst_savings" : 0,
    "dst_exists" : false,
    "dst_tz_abbreviation" : "",
    "dst_tz_full_name" : "",
    "dst_start" : { },
    "dst_end" : { }
  },
  "user_agent" : {
    "user_agent_string" : "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
    "name" : "ClaudeBot",
    "type" : "Robot",
    "version" : "1.0",
    "version_major" : "1",
    "device" : {
      "name" : "Anthropic ClaudeBot",
      "type" : "Robot",
      "brand" : "Anthropic",
      "cpu" : "Unknown"
    },
    "engine" : {
      "name" : "ClaudeBot",
      "type" : "Robot",
      "version" : "1.0",
      "version_major" : "1"
    },
    "operating_system" : {
      "name" : "Cloud",
      "type" : "Cloud",
      "version" : "??",
      "build" : "??",
      "version_major" : "??"
    }
  }
}

Evaluation Checklist

Behind the address

What the data tells you about 211.235.129.54.

Who operates 211.235.129.54?

SK Telecom Co., Ltd. operates AS9644, the autonomous system announcing this address. The associated company is SK Telecom Co., Ltd.; the reported network is 211.235.128.0/19.

View ASN API

Why can its location change?

IP location comes from routing, registry and measurement data. It can shift when SK Telecom Co., Ltd. reassigns the block, so treat Seoul as an estimate, not a fixed point.

View IP Location API

How do I report abuse?

The listed abuse contact is IRT-KRNIC-KR. Include the source IP, timestamps with a timezone, and relevant logs so the contact can investigate.

View Abuse Contact API

For developers

The same data. One API request.

Add IP location, network, and security data to your application.

cURL 
curl --get 'https://api.ipgeolocation.io/v3/ipgeo' \
  --data-urlencode 'apiKey=YOUR_API_KEY' \
  --data-urlencode 'ip=211.235.129.54' \
  --data-urlencode 'include=*'
Response 
{ "ip": "211.235.129.54" }

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Frequently Asked Questions

The latest lookup maps 211.235.129.54 to Seoul, Seoul, South Korea. Geolocation is approximate and should be treated as city/region level guidance.
This page currently shows ASN AS9644 and company SK Telecom Co., Ltd.. ASN and company attribution can change as routing and ownership records are updated.
The reported connection type for 211.235.129.54 is not published. This value helps with traffic analytics, abuse prevention, and policy routing decisions.
The current timezone record for 211.235.129.54 is Asia/Seoul. Teams commonly use this signal to localize timestamps, notifications, and fraud models.
IP intelligence is dynamic. Routing, ASN ownership, company names, and security posture can change over time, so this page should be treated as a point-in-time lookup for 211.235.129.54.
Use the JSON response on this page for testing, then move to production API workflows with structured fields for geolocation, network, ASN, security, abuse, and timezone data. Read documentation.