Registration
IPv4 Prefixes
2 prefixes · 8,704 addresses Routing data as of 2026-10-09 16:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 163.138.160.0/19 | 163.138.160.0 – 163.138.191.255 | 8,192 |
| 192.47.168.0/23 | 192.47.168.0 – 192.47.169.255 | 512 |
IPv6 Prefixes
This AS does not currently announce any IPv6 prefixes.
BGP Neighbours
12 unique neighbours · 6 upstream/peer · 1 downstream · 5 collector-only. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Networks seen to the right of this AS in BGP paths — networks whose routes it carries, typically its customers (downstreams). Networks seen to the left of this AS only when they peer directly with a RIPE RIS route collector, so the adjacency may be an artefact of that peering; many of them also appear on the downstream side. Upstream & peer side (6)
AS Name AS paths IPv4 sightings IPv6 sightings AS2518 BIGLOBE - BIGLOBE Inc. 419 1,825 0 AS6939 HURRICANE - Hurricane Electric LLC 70 283 0 AS7521 MFEED - INTERNET MULTIFEED CO. 12 49 0 AS8966 Etisalat-AS EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC 12 42 0 AS20485 TRANSTELECOM Joint Stock Company TransTeleCom 10 35 0 AS17686 ACCELIA - ACCELIA 2 7 0 Downstream side (1)
AS Name AS paths IPv4 sightings IPv6 sightings AS2511 CORE - Nippon Telegraph and Telephone Corporation 267 1,674 0 Collector-only (5)
Raw RDAP Response
{
"rdapConformance": [
"history_version_0",
"nro_rdap_profile_0",
"nro_rdap_profile_asn_hierarchical_0",
"cidr0",
"rdap_level_0"
],
"notices": [
{
"title": "Source",
"description": [
"Objects returned came from source",
"APNIC"
]
},
{
"title": "Terms and Conditions",
"description": [
"This is the APNIC WHOIS Database query service. The objects are in RDAP format."
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/173",
"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://rdap.apnic.net/autnum/173",
"rel": "inaccuracy-report",
"href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
"type": "text/html"
}
]
}
],
"country": "JP",
"name": "NTTECL-AS",
"status": [
"active"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2008-09-04T06:40:33Z"
},
{
"eventAction": "last changed",
"eventDate": "2023-01-11T04:52:30Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/173",
"rel": "self",
"href": "https://rdap.apnic.net/autnum/173",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"Nippon Telegraph and Telephone Corporation"
],
"title": "description"
}
],
"entities": [
{
"roles": [
"administrative",
"technical"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2008-09-04T07:29:39Z"
},
{
"eventAction": "last changed",
"eventDate": "2022-07-21T13:05:18Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/173",
"rel": "self",
"href": "https://rdap.apnic.net/entity/TF79-AP",
"type": "application/rdap+json"
}
],
"handle": "TF79-AP",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"roles": [
"registrant"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2017-08-08T23:24:37Z"
},
{
"eventAction": "last changed",
"eventDate": "2023-09-05T02:14:59Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/173",
"rel": "self",
"href": "https://rdap.apnic.net/entity/ORG-NTAT1-AP",
"type": "application/rdap+json"
}
],
"handle": "ORG-NTAT1-AP",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Nippon Telegraph and Telephone Corporation"
],
[
"kind",
{},
"text",
"org"
],
[
"adr",
{
"label": "3-9-11 Midori-cho Musashino-shi"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+81-422-59-2725"
],
[
"tel",
{
"type": "fax"
},
"text",
"+81-422-59-5637"
],
[
"email",
{},
"text",
"[email protected]"
]
]
]
},
{
"roles": [
"abuse"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2011-02-22T07:11:31Z"
},
{
"eventAction": "last changed",
"eventDate": "2026-10-02T01:46:43Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/173",
"rel": "self",
"href": "https://rdap.apnic.net/entity/IRT-NTTECL-JP",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"[email protected] was validated on 2026-10-02"
],
"title": "remarks"
}
],
"handle": "IRT-NTTECL-JP",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"IRT-NTTECL-JP"
],
[
"kind",
{},
"text",
"group"
],
[
"adr",
{
"label": "3-9-11 Midori-cho, Musashino-shi, Tokyo, Japan"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{
"pref": "1"
},
"text",
"[email protected]"
]
]
]
}
],
"handle": "AS173",
"startAutnum": 173,
"endAutnum": 173,
"objectClassName": "autnum",
"port43": "whois.apnic.net"
} Contact details of private individuals are redacted.