Home ASN LookupAS173

AS173 NTTECL-AS Nippon Telegraph and Telephone Corporation

🇯🇵

Org handle: ORG-NTAT1-AP

Nippon Telegraph and Telephone Corporation

APNICallocated

Announced Prefixes (BGP)

2total

2 IPv40 IPv6

IPv4 Addresses

Allocated (RIR)512

Announced (BGP)8,704

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)0

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

🇯🇵 JP

RIR

APNIC

Status

allocated

Allocated

2002-08-01

Announced Prefixes

(BGP)2

Prefix	RPKI	IRR	Last Seen
163.138.160.0/19	Valid	APNICOther IRR	2026-10-11
192.47.168.0/23	Valid	APNICOther IRR	2026-10-11

Allocated Prefixes

(RIR)1

Prefix	Country	RIR	Status
192.47.168.0/23	🇯🇵 JP	APNIC	assigned

All 2 announced prefixes of AS173 →

BGP Neighbours

(seen in AS paths)

Upstreams (2)

Networks AS173 hands its own prefixes to: transit providers, or peers at an exchange.

AS2518BIGLOBE1
AS7521MFEED INTERNET MULTIFEED1

Downstreams (1)

Networks whose own prefixes AS173 passes on: usually its customers.

AS2511CORE Nippon Telegraph And Telephone Corporation5

ASPA

No ASPA

External Links

APNIC Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS173 should publish an ASPA object
IPv4 transfers in the APNIC regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/173

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/173" | jq