AS49904 KOSAKA Xiaodong Qi

🇨🇳

Org handle: ORG-KSK6-RIPE

Kosaka Network

RIPE NCCallocated

Announced Prefixes (BGP)

7total

0 IPv47 IPv6

IPv4 Addresses

Allocated (RIR)0

Announced (BGP)0

IPv6 Addresses

Allocated (RIR)2.4×10²⁴

Announced (BGP)1×10²⁵

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

RIR

Status

allocated

Allocated

2017-08-29

Announced Prefixes

(BGP)7

Prefix	RPKI	IRR	Last Seen
2602:feda:d0::/47	No ROA	-	2026-10-10
2602:feda:d2::/48	No ROA	-	2026-10-10
2602:feda:d3::/48	No ROA	-	2026-10-10
2a0b:4340:d0::/47	No ROA	-	2026-10-10
2a0b:4340:d4::/48	No ROA	RIPE	2026-10-10
2a0b:4340:d6::/48	No ROA	RIPE	2026-10-10
2a0b:4340:d8::/48	No ROA	Other IRR	2026-10-10

(RIR)2

Prefix	Country	RIR	Status
2a0b:4340:d4::/48	🇭🇰 HK	RIPE	assigned
2a0b:4340:d6::/48	🇯🇵 JP	RIPE	assigned

(seen in AS paths)

Networks AS49904 hands its own prefixes to: transit providers, or peers at an exchange.

ASPA

No ASPA

Abuse Contact

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 AS49904 should publish an ASPA object
IPv4 transfers in the RIPE NCC 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/49904" | jq