asn.dev

Autonomous system

AS7257 GPC

Unclassified RIPE

IPv4 addresses 512 2 prefixes
IPv6 prefixes 38 counted as prefixes, not addresses
Countries 1 mostly JP
Flagged prefixes 0 none

Summary

MARU (OTO GK)

Japan · AI-generated

network legacy

MARU-NET is held by OTO GK, a Japanese company operating a small network

under the MARU name. The AS number is a reissue: the registration dates to

2026, so despite the low number this is a modern holder with no early-internet

pedigree.

What it's used for

  • MARU describes itself in peering records as a network service provider in the Asia-Pacific region with an open peering policy.
  • What it actually announces is modest: two /24s re-registered as MARU-CIDR-BLK-JP, plus a large IPv6 /29. Its published site was still a placeholder at the time of writing.

Notable

  • The registry paperwork is unusual. A Japanese organisation holds the AS and its address blocks through RIPE rather than APNIC, and the IPv6 /29 is registered to a separate individual, with only a MARU remark linking them.
  • The IPv4 blocks are recycled legacy space, not a fresh allocation — a common pattern for small networks assembled out of transferred address blocks.
  • Because the self-description (a regional network service provider) is far larger than the inventory it announces, this network is best treated as unclassified rather than forced into a category.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Address space

Summary

Full explorer
CountryNamePrefixes
JPJapan40

Registry

Allocation record

via RIPE RDAP
Registry
RIPE
Handle
AS7257
Registry name
MARU-NET
Registrant
MARU-MNT
Abuse contact
otoiawase@k.maru.co.jp
Registered
2026-01-26
Last changed
2026-03-03
Status
active

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

No IC3 indicators Nothing from the FBI IC3 feed.

Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check