Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Long-established allocation (30y) +6
- Not on any threat blocklist +5
- Has a reverse-DNS (PTR) record +5
- Isp allocation +5
- Trust score 86 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
DNS records
- Reverse DNS (PTR)
- yao-mono.jp
- Forward-confirmed (FCrDNS)
- Not checked
- PTR TTL
- 3600 s
- Reverse DNS last checked
- 2026-10-07 09:05 UTC
- Forward DNS last checked
- 2026-10-07 09:05 UTC
Forward DNS records for yao-mono.jp
| Type | Value | Priority | TTL |
|---|---|---|---|
| A | 203.183.146.104 | — | 172800s |
| A | 85.131.214.19 | — | 60s |
| MX | mail.yao-mono.jp | 10 | — |
| NS | dns01.alpha-server.net | — | — |
| NS | dns02.alpha-server.net | — | — |
| TXT | _ffyol70se4p5auwhwiqx8le66v5m6ww | — | — |
| TXT | google-site-verification=J-At-Zw2Sta1euOnZBdXECxb9jAx0wsP7BMf4jp8lGU | — | — |
| TXT | v=spf1 +ip4:203.183.146.104 ~all | — | — |
Reverse & forward DNS collected by the WorldIP scanner fleet — FCrDNS confirms the PTR hostname resolves back to this IP.
Domains hosted
as of 2026-10-04 UTC0
issued.live saw no domain resolving to this IP in its latest weekly snapshot.
Domain data provided by issued.live — for full details visit https://issued.live/pricing
Network Allocation for 203.183.146.104
- CIDR range
- 203.183.144.0/21
- IP range (int)
- 3,417,804,800 — 3,417,806,847
- Prefix length
- /21
- Organization
- IDC Frontier Inc.
- ASN
- AS4694
- ASN name
- IDC Frontier Inc.
- Location
- Japan
- Coordinates
- 35.690000, 139.690000
- Accuracy radius
- 500 km
- Regional Internet Registry
- APNIC
- Allocated
- 1996-04-11
- Data source(s)
- maxmind_asn, ipinfo_lite, maxmind_city, maxmind_country
- Last updated
- 2026-10-07 08:50:14
BGP Routing
Live BGP anomalies →Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.
Frequently Asked Questions
Who owns 203.183.146.104?
203.183.146.104 is allocated to IDC Frontier Inc. (AS4694), registered in Japan.
Where is 203.183.146.104 located?
The geolocation for 203.183.146.104 maps to Japan based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.
What network is 203.183.146.104 on?
203.183.146.104 belongs to the 203.183.144.0/21 network block announced by AS4694. This range contains 2,048 addresses.
Does 203.183.146.104 have a reverse DNS record?
Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.
Neighbors
Other addresses in the same /24.
