Home ASN LookupAS18097

AS18097 DCN - D.C.N. Corporation

Announced Prefixes (BGP)

20total

19 IPv41 IPv6

IPv4 Addresses

Allocated (RIR)8,192

Announced (BGP)19,968

IPv6 Addresses

Allocated (RIR)7.9×10²⁸

Announced (BGP)7.9×10²⁸

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Allocated

Routing hygiene

Score 49/100 · Medium risk

RPKI ROA coverage

no RPKI invalid prefixes

IRR route objects

35%

no origin mismatches

Hijack signals

0 announced against others' ROAs, 0 own announced by others

Upstreams

diversity 10/100

100% of announced prefixes (20 of 20) have no valid ROA
65% of announced prefixes (13 of 20) have no IRR route object for this ASN
Routes concentrated on one upstream (95% of routes)

Based on 20 announced prefixes, updated daily (2026-10-12). How the score works · RPKI explained

Announced Prefixes

(BGP)20

Prefix	RPKI	IRR	Last Seen
27.109.120.0/22	No ROA	Other IRR	2026-10-12
45.113.172.0/22	No ROA	-	2026-10-12
103.36.140.0/22	No ROA	Other IRR	2026-10-12
103.53.96.0/22	No ROA	-	2026-10-12
103.83.24.0/22	No ROA	Other IRR	2026-10-12
119.15.144.0/21	No ROA	Other IRR	2026-10-12
121.100.56.0/22	No ROA	-	2026-10-12
121.100.60.0/22	No ROA	-	2026-10-12
123.108.84.0/22	No ROA	Other IRR	2026-10-12
153.124.232.0/24	No ROA	-	2026-10-12

1-10 of 20

1 / 2

Allocated Prefixes

(RIR)8

Prefix	Country	RIR	Status
27.109.120.0/22	🇯🇵 JP	APNIC	allocated
45.113.172.0/22	🇯🇵 JP	APNIC	allocated
103.36.140.0/22	🇯🇵 JP	APNIC	allocated
103.53.96.0/22	🇯🇵 JP	APNIC	allocated
103.83.24.0/22	🇯🇵 JP	APNIC	allocated
119.15.144.0/21	🇯🇵 JP	APNIC	allocated
123.108.84.0/22	🇯🇵 JP	APNIC	allocated
2402:c400::/32	🇯🇵 JP	APNIC	allocated

All 20 announced prefixes of AS18097 →

BGP Neighbours

(seen in AS paths)

Upstreams (2)

Networks AS18097 hands its own prefixes to: transit providers, or peers at an exchange.

AS7529GMO NetIRD19
AS2914NTT America1

ASPA

No ASPA

External Links

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 AS18097 should publish an ASPA object
IPv4 transfer marketTransfers published by all five RIRs
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/18097

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

curl -s "https://api.ipctl.io/v1/asn/18097" | jq