Free network tools
AS WHOIS
Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
Network Report (All-in-one) BGP Looking Glass BGP Security Check RPKI Validator BGP Hijack & Leak Monitor ASN Intelligence Internet Outages & Anomalies Country Internet Report Domain Insights IP WHOIS AS WHOIS
AS17841
NCIA-AS-KR-KR - NATIONAL INFORMATION RESOURCES SERVICE Announcing routesAS nameNCIA-AS-KR-KR
CountryKR
Registry (RIR)APNIC
HandleAS17841
RangeAS17841
Registered—
Last changed—
Abuse contact[email protected]
509IPv4 prefixes
0IPv6 prefixes
4Upstreams
4Downstreams
IPv4 prefixes (509)
27.101.147.0/2427.101.155.0/24203.241.52.0/24152.99.136.0/24125.60.29.0/2427.101.89.0/24125.60.0.0/2427.101.13.0/24125.60.55.0/24152.99.148.0/24222.111.168.0/22152.99.95.0/24152.99.26.0/24152.99.162.0/24152.99.139.0/24125.60.42.0/24125.60.19.0/2427.101.135.0/2461.72.237.128/25152.99.134.0/24211.39.92.0/24203.238.164.0/24152.99.56.0/2427.101.63.0/2427.101.59.0/24210.103.72.0/2527.101.93.0/24210.99.50.0/2427.101.107.0/24210.99.248.0/2427.101.233.0/2427.101.198.0/2427.101.132.0/24211.34.108.0/2527.101.109.0/2427.101.197.0/2458.184.121.0/2427.101.209.0/24152.99.252.0/24203.242.1.0/2427.101.232.0/24203.242.4.128/2527.101.82.0/24125.128.64.128/25152.99.77.0/2527.101.118.0/24125.60.48.0/2527.101.153.0/24211.173.37.0/2427.101.105.0/24152.99.92.0/2427.101.35.0/2427.101.204.0/2427.101.192.0/24152.99.73.0/2427.101.238.0/24115.84.167.0/24152.99.84.0/24203.242.2.0/25152.99.27.0/2461.72.230.0/24152.99.50.0/24210.90.47.0/24125.60.54.0/2427.101.77.0/24152.99.154.0/2427.101.58.0/24152.99.25.0/24125.60.12.0/24211.252.37.0/24152.99.120.0/24116.67.0.0/17152.99.237.0/24152.99.104.0/25203.254.121.0/2461.72.239.0/24152.99.82.0/24210.95.219.0/2427.101.67.0/2427.101.90.0/24152.99.152.0/2461.72.226.0/24152.99.42.0/24115.84.160.0/24152.99.176.0/24152.99.90.0/24222.111.248.0/2127.101.152.0/24210.99.54.0/2427.101.236.0/24152.99.59.0/24211.114.22.128/25152.99.153.0/2427.101.18.0/2427.101.41.0/2427.101.61.0/24152.99.235.0/24211.34.86.0/2427.101.45.0/24152.99.207.0/2427.101.87.0/24152.99.195.0/24125.60.48.128/25152.99.206.0/24210.99.25.0/2427.101.49.0/2427.101.195.0/2427.101.38.0/2427.101.65.0/24203.242.0.0/23152.99.208.0/2427.101.113.0/24210.99.24.0/2427.101.37.0/24125.60.22.0/2427.101.72.0/24210.99.52.0/24125.60.0.0/1827.101.60.0/24210.103.72.128/25211.253.82.0/24210.103.82.0/2427.101.95.0/24180.210.73.0/24125.60.1.0/2427.101.22.0/2427.101.103.0/24125.60.24.0/2427.101.141.0/2427.101.228.0/24203.238.161.0/24152.99.89.128/25210.104.250.0/2427.101.21.0/24210.90.15.0/24115.84.165.0/24203.242.3.0/25152.99.138.0/2427.101.160.0/2427.101.207.0/2427.101.137.0/24152.99.142.0/24125.60.59.0/24211.42.86.0/24125.60.27.0/24152.99.46.0/2527.101.47.0/24152.99.39.0/24210.99.49.0/24152.99.21.0/2427.101.44.0/24210.103.72.0/2427.101.99.0/24152.99.144.0/2427.101.216.0/24203.242.6.0/25125.60.46.128/25211.57.153.0/2427.101.85.0/24203.242.2.128/25152.99.209.0/24125.60.34.0/24152.99.197.0/2427.101.39.0/2427.101.62.0/2427.101.208.0/24125.61.116.0/2427.101.143.0/24210.99.51.0/24211.114.22.0/25125.60.30.0/24125.60.9.0/2427.101.120.0/24152.99.91.0/2427.101.129.0/24152.99.172.0/2461.72.225.0/24125.60.36.0/2427.101.149.0/2427.101.112.0/24211.253.62.0/24210.103.63.0/24210.104.148.0/24211.250.131.0/24125.60.16.0/2427.101.64.0/2427.101.158.0/24125.60.4.0/2527.101.237.0/24125.60.33.0/24152.99.175.0/2427.101.98.0/24211.42.84.0/2327.101.116.0/24180.210.98.0/24152.99.238.0/24211.34.108.128/2527.101.24.0/2427.101.202.0/24180.210.69.0/24125.60.6.128/25123.32.255.0/24125.60.46.0/25210.178.101.0/2427.101.68.0/24203.233.54.0/23152.99.0.0/16152.99.32.0/24210.99.55.0/2427.101.17.0/2427.101.40.0/2427.101.91.0/2427.101.33.0/24180.210.85.0/24152.99.168.0/24125.60.3.0/24203.243.1.0/24152.99.203.0/24203.242.2.0/24211.61.29.0/24152.99.174.0/2427.101.194.0/24203.238.160.0/24203.242.0.0/24210.106.108.0/2427.101.206.0/24152.99.182.0/24211.34.108.0/24210.179.148.0/24152.99.236.0/2427.101.100.0/24210.99.48.0/2427.101.255.128/2527.101.84.0/2427.101.66.0/24115.84.162.0/24152.99.29.0/24210.104.41.0/24152.99.48.0/24125.60.58.0/24210.99.53.0/2461.72.238.0/2427.101.16.0/24152.99.184.0/24152.99.133.0/24210.179.205.0/2427.101.26.0/2427.101.210.0/25211.114.24.0/24211.253.122.0/24152.99.163.0/2427.101.43.0/2427.101.71.0/24152.99.213.0/2427.101.108.0/24210.204.58.128/25203.233.56.0/23125.60.6.0/25203.242.4.0/24211.39.93.0/24125.60.23.0/24152.99.132.0/2427.101.88.0/2427.101.131.0/2427.101.48.0/24152.99.183.0/24211.34.109.0/24115.84.163.0/24211.253.148.0/24192.245.250.0/25211.173.35.0/2427.101.101.0/24125.60.10.0/2427.101.53.0/2427.101.19.0/2427.101.75.0/2427.101.123.0/2427.101.220.0/22125.60.56.0/24210.99.62.0/24211.253.121.0/24152.99.87.128/25203.238.166.0/24211.34.109.0/2527.101.139.0/2427.101.111.0/2427.101.162.0/24210.95.187.0/24125.60.28.0/24152.99.161.0/2427.101.234.0/24152.99.57.0/24210.97.27.0/24125.60.51.0/24211.39.91.0/24203.254.120.0/25152.99.58.0/2427.101.110.0/2427.101.55.0/24211.253.99.0/24
RPKI-validate all prefixes of AS17841
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| technical, administrative | AS Manager | KC391-KR | [email protected], +82-42-250-5744 | Daejeon Yuseong-gu Daedeok-daero 755, 755 Daedeokdae-ro Yusung-gu Daejeon, Korea |
| abuse | IRT-KRNIC-KR | IRT-KRNIC-KR | [email protected], [email protected] | Seocho-ro 398, Seocho-gu, Seoul, Korea |
Raw registry response
{
"rdapConformance": [
"nro_rdap_profile_0",
"nro_rdap_profile_asn_hierarchical_0",
"cidr0",
"rdap_level_0"
],
"notices": [
{
"title": "Source",
"description": [
"Objects returned came from source",
"KRNIC"
]
},
{
"title": "Terms and Conditions",
"description": [
"This is the APNIC WHOIS Database query service. The objects are in RDAP format.",
"This information has been partially mirrored by APNIC from KRNIC. To obtain more specific information, please use the KRNIC whois server at whois.kisa.or.kr."
],
"links": [
{
"value": "https://krnic.rdap.apnic.net/autnum/17841",
"rel": "terms-of-service",
"href": "http://www.apnic.net/db/dbcopyright.html",
"type": "text/html"
}
]
},
{
"title": "Whois Inaccuracy Reporting",
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"value": "https://krnic.rdap.apnic.net/autnum/17841",
"rel": "inaccuracy-report",
"href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
"type": "text/html"
}
]
}
],
"country": "KR",
"name": "NCIA-AS-KR-KR",
"status": [
"active"
],
"links": [
{
"value": "https://krnic.rdap.apnic.net/autnum/17841",
"rel": "self",
"href": "https://krnic.rdap.apnic.net/autnum/17841",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"NATIONAL INFORMATION RESOURCES SERVICE"
],
"title": "description"
}
],
"entities": [
{
"roles": [
"technical",
"administrative"
],
"links": [
{
"value": "https://krnic.rdap.apnic.net/autnum/17841",
"rel": "self",
"href": "https://krnic.rdap.apnic.net/entity/KC391-KR",
"type": "application/rdap+json"
}
],
"handle": "KC391-KR",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"AS Manager"
],
[
"kind",
[],
"text",
"individual"
],
[
"adr",
{
"label": "Daejeon Yuseong-gu Daedeok-daero 755\n755 Daedeokdae-ro Yusung-gu Daejeon, Korea"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+82-42-250-5744"
],
[
"email",
[],
"text",
"[email protected]"
]
]
]
},
{
"roles": [
"abuse"
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2017-10-19T07:36:36Z"
}
],
"links": [
{
"value": "https://krnic.rdap.apnic.net/autnum/17841",
"rel": "self",
"href": "https://krnic.rdap.apnic.net/entity/IRT-KRNIC-KR",
"type": "application/rdap+json"
}
],
"handle": "IRT-KRNIC-KR",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"IRT-KRNIC-KR"
],
[
"kind",
[],
"text",
"group"
],
[
"adr",
{
"label": "Seocho-ro 398, Seocho-gu, Seoul, Korea"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"email",
[],
"text",
"[email protected]"
],
[
"email",
{
"pref": "1"
},
"text",
"[email protected]"
]
]
]
}
],
"handle": "AS17841",
"startAutnum": 17841,
"endAutnum": 17841,
"objectClassName": "autnum",
"port43": "whois.apnic.net"
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.