ResearchRouting table, RPKI, IRR & looking glass

AS18131 NTT DOCOMO BUSINESS, Inc.

AS18131 (DXNW) is registered to NTT DOCOMO BUSINESS, Inc. in JP. It originates 2 prefixes in the global routing table.

1
IPv4 prefixes
1
IPv6 prefixes
256
IPv4 addresses
100%
RPKI valid

Who holds AS18131

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS18131
Handle
DXNW
Organization
NTT DOCOMO BUSINESS, Inc.
Country
JP
ASPA
None published

What AS18131 announces

Prefixes originated by AS18131 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
1
IPv6 prefixes
1
IPv4 addresses
256 (1 /24s)
RPKI valid
2 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS18131
3
With an IRR route object
2 100%

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

IPv4 (1)
IPv6 (1)

RPKI valid   RPKI invalid   no ROA covers it

Who AS18131 is reached through

The AS just before AS18131 in the paths our looking glass collectors hold, for 2 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Sourceas-nameMaintained by
JPIRRDXNW-ASMAINT-AS18131
NTTCOMDXNW-ASMAINT-AS18131

Route objects with origin AS18131: JPIRR 4 · NTTCOM 3

as-sets that list AS18131 (5)