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CIDR Range

51.7.50.0/25

128 IPs /25 British Telecommunications PLC AS6871 United Kingdom RIPE
Addresses
128
128
IP Range
51.7.50.0
→ 51.7.50.127
Sub-ranges
2+
within this block
PTR Density
100.0%
128 of 128 IPs have PTR ~

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.

76/100
Moderate
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 51.7.50.0/25

CIDRIPsOrganizationASNCountry
51.7.50.0/26 64 British Telecommunications PLC AS6871 GB
51.7.50.64/26 64 British Telecommunications PLC AS6871 GB

Geolocation

All 128 IP addresses in 51.7.50.0/25

51.7.50.0 51.7.50.1 51.7.50.2 51.7.50.3 51.7.50.4 51.7.50.5 51.7.50.6 51.7.50.7 51.7.50.8 51.7.50.9 51.7.50.10 51.7.50.11 51.7.50.12 51.7.50.13 51.7.50.14 51.7.50.15 51.7.50.16 51.7.50.17 51.7.50.18 51.7.50.19 51.7.50.20 51.7.50.21 51.7.50.22 51.7.50.23 51.7.50.24 51.7.50.25 51.7.50.26 51.7.50.27 51.7.50.28 51.7.50.29 51.7.50.30 51.7.50.31 51.7.50.32 51.7.50.33 51.7.50.34 51.7.50.35 51.7.50.36 51.7.50.37 51.7.50.38 51.7.50.39 51.7.50.40 51.7.50.41 51.7.50.42 51.7.50.43 51.7.50.44 51.7.50.45 51.7.50.46 51.7.50.47 51.7.50.48 51.7.50.49 51.7.50.50 51.7.50.51 51.7.50.52 51.7.50.53 51.7.50.54 51.7.50.55 51.7.50.56 51.7.50.57 51.7.50.58 51.7.50.59 51.7.50.60 51.7.50.61 51.7.50.62 51.7.50.63 51.7.50.64 51.7.50.65 51.7.50.66 51.7.50.67 51.7.50.68 51.7.50.69 51.7.50.70 51.7.50.71 51.7.50.72 51.7.50.73 51.7.50.74 51.7.50.75 51.7.50.76 51.7.50.77 51.7.50.78 51.7.50.79 51.7.50.80 51.7.50.81 51.7.50.82 51.7.50.83 51.7.50.84 51.7.50.85 51.7.50.86 51.7.50.87 51.7.50.88 51.7.50.89 51.7.50.90 51.7.50.91 51.7.50.92 51.7.50.93 51.7.50.94 51.7.50.95 51.7.50.96 51.7.50.97 51.7.50.98 51.7.50.99 51.7.50.100 51.7.50.101 51.7.50.102 51.7.50.103 51.7.50.104 51.7.50.105 51.7.50.106 51.7.50.107 51.7.50.108 51.7.50.109 51.7.50.110 51.7.50.111 51.7.50.112 51.7.50.113 51.7.50.114 51.7.50.115 51.7.50.116 51.7.50.117 51.7.50.118 51.7.50.119 51.7.50.120 51.7.50.121 51.7.50.122 51.7.50.123 51.7.50.124 51.7.50.125 51.7.50.126 51.7.50.127

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 51.6.0.0/15.

Announced prefix
51.6.0.0/15
Origin AS
AS6871
Announcement samples
4,575
Last seen
2026-07-23 15:33:37

Frequently Asked Questions

What is 51.7.50.0/25?

51.7.50.0/25 is a CIDR network block containing 128 IPv4 addresses (from 51.7.50.0 to 51.7.50.127). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 51.7.50.0/25 network?

The 51.7.50.0/25 range is allocated to British Telecommunications PLC and announced via AS6871 from United Kingdom.

How many IP addresses are in 51.7.50.0/25?

51.7.50.0/25 contains exactly 128 usable IPv4 addresses. A /25 prefix length means 128 addresses are covered by this single routing entry.

Last updated: 2026-07-23 15:40:31 UTC
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