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CIDR Range

121.242.80.0/20

Addresses
4,096
4.1K
Sub-ranges
13+
within this block
PTR Density
75.0%
3.1K of 4.1K 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.

81/100
Trusted
How this score is built

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

Ranges inside 121.242.80.0/20

First and last addresses in 121.242.80.0/20

121.242.80.0/20 runs from 121.242.80.0 to 121.242.95.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 121.242.0.0/16.

Announced prefix
Origin AS
Announcement samples
10,564
Last seen
2026-10-27 15:19:03

Frequently Asked Questions

What is 121.242.80.0/20?

121.242.80.0/20 is a CIDR network block containing 4,096 IPv4 addresses (from 121.242.80.0 to 121.242.95.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 121.242.80.0/20 network?

The 121.242.80.0/20 range is allocated to TATA Communications formerly VSNL is Leading ISP and announced via AS4755 from India.

Last updated: 2026-10-27 15:39:06 UTC
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