AS17661 NHN-JAPAN NHN Cloud Japan Corporation

🇯🇵

Org handle: A91A7381

for assignment to JPNIC members

APNICallocated

Announced Prefixes (BGP)

25total

25 IPv40 IPv6

IPv4 Addresses

Allocated (RIR)7,424

Announced (BGP)11,520

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)0

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

RIR

Status

allocated

Allocated

2001-12-03

Announced Prefixes

(BGP)25

Prefix	RPKI	IRR	Last Seen
27.147.96.0/20	No ROA	-	2026-10-11
103.2.29.0/24	No ROA	-	2026-10-11
119.235.225.0/24	No ROA	-	2026-10-11
119.235.226.0/23	No ROA	-	2026-10-11
119.235.228.0/22	No ROA	-	2026-10-11
119.235.233.0/24	No ROA	-	2026-10-11
119.235.234.0/24	No ROA	-	2026-10-11
119.235.238.0/23	No ROA	-	2026-10-11
183.90.192.0/24	No ROA	-	2026-10-11
183.90.193.0/24	No ROA	-	2026-10-11

1-10 of 25

1 / 3

(RIR)9

Prefix	Country	RIR	Status
27.147.96.0/20	🇯🇵 JP	APNIC	allocated
103.2.29.0/24	🇯🇵 JP	APNIC	allocated
119.235.225.0/24	🇯🇵 JP	APNIC	allocated
119.235.226.0/23	🇯🇵 JP	APNIC	allocated
119.235.228.0/22	🇯🇵 JP	APNIC	allocated
119.235.233.0/24	🇯🇵 JP	APNIC	allocated
119.235.234.0/24	🇯🇵 JP	APNIC	allocated
119.235.238.0/23	🇯🇵 JP	APNIC	allocated
203.104.159.0/24	🇯🇵 JP	APNIC	allocated

(seen in AS paths)

Networks AS17661 hands its own prefixes to: transit providers, or peers at an exchange.

ASPA

No ASPA

External Links

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 AS17661 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

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

curl -s "https://api.ipctl.io/v1/asn/17661" | jq