AS7257 OTO GK

Japan MARU-NET RIPE 2 IPv4 prefixes 1 IPv6 prefix

IPv4 addresses

512

IPv6 /48 networks

524,288

RPKI

0 valid3 no ROA

Peers and downstreams

Holder

AS name: MARU-NET
Description: MARU
Organisation: OTO GK
Registered in: Tokyo, Japan
Abuse contact: otoiawase@k.maru.co.jp
Assigned: 2025-01-23
Registered: 2026-01-26
Record last changed: 2026-03-03 06:54 UTC

168.151.54.0/24 208.88.66.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade C · 70/100

fail	Prefixes covered by valid ROAs 0 of 3 announced prefixes are RPKI valid, 3 have no ROA.	0/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 1 IPv6 prefix.	15/15
partly	More than one upstream 1 upstream seen in BGP.	5/10
pass	Working abuse contact otoiawase@k.maru.co.jp is published.	15/15
pass	Publishes a geofeed A geofeed (RFC 8805) tells where the address space is used.	10/10
pass	No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger.	10/10
pass	Registry record maintained Last changed 2026-03-03.	5/5

Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.

Show this on your website

HTML

<a href="https://ip-fd.net/asn/7257"><img src="https://ip-fd.net/badge/asn/7257/health.svg" alt="AS7257 network health on IP-FD.net"></a>

Markdown

[![AS7257 network health](https://ip-fd.net/badge/asn/7257/health.svg)](https://ip-fd.net/asn/7257)

Use rpki.svg instead of health.svg for the RPKI badge.

Routing changes

Last 30 days

No changes recorded in the last 30 days. Changes are recorded each time the routing data of this AS is refreshed. Get alerts in real time.

WHOIS

aut-num:        AS7257
as-name:        MARU-NET
descr:          MARU
org:            ORG-MARU1-RIPE
sponsoring-org: ORG-MBC3-RIPE
admin-c:        MARU3-RIPE
tech-c:         MARU3-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MARU-MNT
created:        2026-01-26T15:19:49Z
last-modified:  2026-03-03T06:54:52Z
source:         RIPE

Routing data

Updated just now

Registry record

Fetched just now from RIPE

Prefixes and neighbours come from the RIPE RIS route collectors. Data older than 5 minutes is refreshed when this page is opened.

API

curl -H "X-API-Key: YOUR_KEY" https://ip-fd.net/api/v1/asn/7257

const res = await fetch('https://ip-fd.net/api/v1/asn/7257', {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();
console.log(data);

import requests

r = requests.get('https://ip-fd.net/api/v1/asn/7257', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/7257');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['X-API-Key: YOUR_KEY']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = json_decode(curl_exec($ch), true);
print_r($data);

req, _ := http.NewRequest("GET", "https://ip-fd.net/api/v1/asn/7257", nil)
req.Header.Set("X-API-Key", "YOUR_KEY")
res, err := http.DefaultClient.Do(req)
if err != nil {
    log.Fatal(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

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