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CIDR Range

103.21.42.128/25

128 IPs /25 EARTH TELECOMMUNICATION Pvt LTD. AS58715 Bangladesh APNIC
Addresses
128
128
IP Range
103.21.42.128
→ 103.21.42.255
Sub-ranges
0+
within this block
PTR Density
99.2%
127 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.

78/100
Moderate
How this score is built

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

Geolocation

First and last addresses in 103.21.42.128/25

103.21.42.128/25 runs from 103.21.42.128 to 103.21.42.255.

First 16
103.21.42.128 103.21.42.129 103.21.42.130 103.21.42.131 103.21.42.132 103.21.42.133 103.21.42.134 103.21.42.135 103.21.42.136 103.21.42.137 103.21.42.138 103.21.42.139 103.21.42.140 103.21.42.141 103.21.42.142 103.21.42.143
Last 16
103.21.42.240 103.21.42.241 103.21.42.242 103.21.42.243 103.21.42.244 103.21.42.245 103.21.42.246 103.21.42.247 103.21.42.248 103.21.42.249 103.21.42.250 103.21.42.251 103.21.42.252 103.21.42.253 103.21.42.254 103.21.42.255

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 103.21.42.0/23.

Announced prefix
103.21.42.0/23
Origin AS
AS58715
Announcement samples
149,887
Last seen
2026-11-13 10:59:21

Frequently Asked Questions

What is 103.21.42.128/25?

103.21.42.128/25 is a CIDR network block containing 128 IPv4 addresses (from 103.21.42.128 to 103.21.42.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 103.21.42.128/25 network?

The 103.21.42.128/25 range is allocated to EARTH TELECOMMUNICATION Pvt LTD. and announced via AS58715 from Bangladesh.

How many IP addresses are in 103.21.42.128/25?

103.21.42.128/25 contains exactly 128 usable IPv4 addresses. A /25 prefix length means 128 addresses are covered by this single routing entry.

Last updated: 2026-11-13 11:09:05 UTC
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