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CIDR Range

121.240.0.0/15

131.1K IPs /15 India APNIC
Addresses
131,072
131.1K
IP Range
121.240.0.0
→ 121.241.255.255
Sub-ranges
50+
within this block
PTR Density
74.6%
97.8K of 131.1K 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 v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 121.240.0.0/15

CIDRIPsOrganizationASNCountry
121.241.0.0/16 65.5K TATA Communications formerly VSNL is Leading ISP AS4755 IN
121.241.0.0/16 65.5K TATA Communications formerly VSNL is Leading ISP AS4755 IN
121.240.0.0/17 32.8K TATA Communications formerly VSNL is Leading ISP AS4755 IN
121.240.0.0/17 32.8K TATA Communications formerly VSNL is Leading ISP AS4755 IN
121.240.128.0/18 16.4K TATA Communications formerly VSNL is Leading ISP AS4755 IN
121.240.192.0/18 16.4K TATA Communications formerly VSNL is Leading ISP AS4755 IN
121.240.192.0/19 8.2K TATA Communications formerly VSNL is Leading ISP AS4755 IN
121.240.64.0/19 8.2K — — IN
121.240.32.0/19 8.2K — — IN
121.240.128.0/19 8.2K TATA Communications formerly VSNL is Leading ISP AS4755 IN
121.240.192.0/19 8.2K — — IN
121.241.96.0/19 8.2K — — IN
121.241.48.0/20 4.1K — — IN
121.241.128.0/20 4.1K — — IN
121.240.240.0/20 4.1K TATA Communications formerly VSNL is Leading ISP AS4755 IN
121.240.176.0/20 4.1K — — IN
121.240.176.0/20 4.1K TATA Communications formerly VSNL is Leading ISP AS4755 IN
121.241.16.0/20 4.1K — — IN
121.240.0.0/20 4.1K — — IN
121.241.64.0/20 4.1K — — IN
121.240.128.0/20 4.1K — — IN
121.241.224.0/20 4.1K — — IN
121.240.240.0/20 4.1K — — IN
121.240.112.0/21 2.0K — — IN
121.240.224.0/21 2.0K — — IN
121.240.168.0/21 2.0K — — IN
121.240.144.0/21 2.0K — — IN
121.240.160.0/21 2.0K TATA Communications formerly VSNL is Leading ISP AS4755 IN
121.241.152.0/21 2.0K — — IN
121.241.192.0/21 2.0K — — IN
121.241.216.0/21 2.0K — — IN
121.240.232.0/21 2.0K TATA Communications formerly VSNL is Leading ISP AS4755 IN

First and last addresses in 121.240.0.0/15

121.240.0.0/15 runs from 121.240.0.0 to 121.241.255.255.

First 16
121.240.0.0 121.240.0.1 121.240.0.2 121.240.0.3 121.240.0.4 121.240.0.5 121.240.0.6 121.240.0.7 121.240.0.8 121.240.0.9 121.240.0.10 121.240.0.11 121.240.0.12 121.240.0.13 121.240.0.14 121.240.0.15
Last 16
121.241.255.240 121.241.255.241 121.241.255.242 121.241.255.243 121.241.255.244 121.241.255.245 121.241.255.246 121.241.255.247 121.241.255.248 121.241.255.249 121.241.255.250 121.241.255.251 121.241.255.252 121.241.255.253 121.241.255.254 121.241.255.255

Frequently Asked Questions

What is 121.240.0.0/15?

121.240.0.0/15 is a CIDR network block containing 131,072 IPv4 addresses (from 121.240.0.0 to 121.241.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 121.240.0.0/15 network?

The 121.240.0.0/15 range is allocated to an unknown organization from India.

Last updated: 2026-11-14 07:54:05 UTC
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