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Summary IP address summary information Name
National Cancer Center Country
Website
Hosted domains
18 IPv4 addresses
1,024 IPv6 addresses
0 ASN type
Government Registry
APNIC Updated
5 years ago on Nov 3, 2021
WHOIS
ASHandle: █████
OrgID: █████
ASName: ██████
ASNumber: AS█████
RegDate: ████-██-██
Updated: ████-██-██
TechHandle: ████-████
Source: ████
Powered by ASN to WHOIS data Important routers in AS55597
What is an ASN? Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.
The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS55597 at robtex .
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Stub AS
Stub AS
Pingable IPs 0 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more
Other Pingable IPs IP Address ASN Details 71.224.246.221 Ping AS7922 Comcast Cable Communications, LLC #1 6.79ms from Ashburn, US 71.12.221.253 Ping AS20115 Charter Communications LLC #33 10.13ms from Atlanta, US 151.104.39.253 Ping AS1218 Oracle Corporation #52,044 1.07ms from London, GB 80.39.165.173 Ping AS3352 TELEFONICA DE ESPANA S.A.U. #24 1.21ms from Madrid, ES 222.175.97.13 Ping AS4134 CHINANET BACKBONE #5 5.92ms from Qingdao, CN 46.18.250.13 Ping AS51785 Karafarin Bank Plc. #69,456 1.26ms from Tehran, IR 221.49.115.157 Ping AS17676 SoftBank Corp. #8 3.31ms from Tokyo, JP 52.226.75.29 Ping AS8075 Microsoft Corporation #241 0.57ms from Ashburn, US 103.61.18.45 Ping AS150701 Regiment Technologies #44,056 0.80ms from Dhaka, BD 80.222.153.157 Ping AS1759 Telia Finland Oyj #393 3.29ms from Helsinki, FI
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Traceroute Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more. Traceroute →
$ traceroute -a -n -q1 49.50.1.3
traceroute to 49.50.1.3 (49.50.1.3 ): 64 hops max, 52 byte packets
Measurement taken from IPinfo ProbeNet in Seoul, KR
On November 6, 2026
There are 1 peers for this ASN.
ASN Name Rank AS4766 Korea Telecom #15
There are 1 upstreams for this ASN.
ASN Name Rank AS4766 Korea Telecom #15
There are 0 downstreams for this ASN.
No downstreams found.
Share of IPv4 footprint per hexagon Less More
Held location over 90 days 99%
Held location over 1 year 99%
Median days between moves 1,218 days
Geolocation scope City How consistently this network's IPs hold their geolocation. Read relative to the network type, not as a quality score.
There are 18 domain names hosted across 8 IP addresses on this ASN.
Activity Too few observations to describe this network's daily rhythm with confidence.
Times shown in South Korea local time (UTC+9). Less More
Based on limited observations — empty cells may be hours we didn't observe rather than quiet ones.
Peak hour 13:00–14:00
Active hours 5 hrs
Weekend vs weekday weekdays heavier
Busiest day Mon
Network type Government
Geography South Korea 
