CIDR Range

1.6.31.128/27

32 IPs /27 Sify Limited AS9583 India APNIC

Addresses

IP Range

1.6.31.128

→ 1.6.31.159

Sub-ranges

within this block

PTR Density

0.0%

0 of 32 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.

71/100

Moderate

How this score is built

Baseline (neutral) 65
Long-established allocation (15y) +6
Trust score 71 / 100

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

Geolocation

All 32 IP addresses in 1.6.31.128/27

1.6.31.128 1.6.31.129 1.6.31.130 1.6.31.131 1.6.31.132 1.6.31.133 1.6.31.134 1.6.31.135 1.6.31.136 1.6.31.137 1.6.31.138 1.6.31.139 1.6.31.140 1.6.31.141 1.6.31.142 1.6.31.143 1.6.31.144 1.6.31.145 1.6.31.146 1.6.31.147 1.6.31.148 1.6.31.149 1.6.31.150 1.6.31.151 1.6.31.152 1.6.31.153 1.6.31.154 1.6.31.155 1.6.31.156 1.6.31.157 1.6.31.158 1.6.31.159

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 1.6.28.0/22.

Announced prefix

1.6.28.0/22

Origin AS

AS9583

Announcement samples

26,673

Last seen

2026-07-23 08:25:06

Frequently Asked Questions

What is 1.6.31.128/27?

1.6.31.128/27 is a CIDR network block containing 32 IPv4 addresses (from 1.6.31.128 to 1.6.31.159). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 1.6.31.128/27 network?

The 1.6.31.128/27 range is allocated to Sify Limited and announced via AS9583 from India.

How many IP addresses are in 1.6.31.128/27?

1.6.31.128/27 contains exactly 32 usable IPv4 addresses. A /27 prefix length means 32 addresses are covered by this single routing entry.

Last updated: 2026-07-23 08:40:31 UTC