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 (24y) +6
- Isp allocation +5
- Trust score 76 / 100
Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 81.19.103.0/24
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 81.19.103.0/25 | 128 | NTT America, Inc. | AS2914 | GB |
| 81.19.103.128/26 | 64 | NTT America, Inc. | AS2914 | GB |
| 81.19.103.192/27 | 32 | NTT America, Inc. | AS2914 | GB |
| 81.19.103.224/28 | 16 | NTT America, Inc. | AS2914 | GB |
| 81.19.103.240/29 | 8 | NTT America, Inc. | AS2914 | GB |
| 81.19.103.248/29 | 8 | NTT America, Inc. | AS2914 | ES |
Geolocation
First and last addresses in 81.19.103.0/24
81.19.103.0/24 runs from 81.19.103.0 to 81.19.103.255.
BGP Routing
Live BGP anomalies →Not announced as an exact prefix — covered by the announced supernet 81.19.96.0/20.
RIR Ownership History
Atom feed ⇲Allocation changes captured from regional internet registry (RIR) delegation files, re-imported every six hours.
| Date | Event | From | To |
|---|---|---|---|
| 2026-05-10 | New Allocation | — | GB |
Frequently Asked Questions
What is 81.19.103.0/24?
81.19.103.0/24 is a CIDR network block containing 256 IPv4 addresses (from 81.19.103.0 to 81.19.103.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 81.19.103.0/24 network?
The 81.19.103.0/24 range is allocated to NTT America, Inc. and announced via AS2914 from United Kingdom.
How many IP addresses are in 81.19.103.0/24?
81.19.103.0/24 contains exactly 256 usable IPv4 addresses. A /24 prefix length means 256 addresses are covered by this single routing entry.
