CIDR Range

71.78.72.80/28

16 IPs /28 Charter Communications, Inc AS11427 United States ARIN

Addresses

IP Range

71.78.72.80

→ 71.78.72.95

Sub-ranges

within this block

PTR Density

100.0%

16 of 16 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

Baseline (neutral) 65
Long-established allocation (21y) +6
Has a reverse-DNS (PTR) record +5
Trust score 76 / 100

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

Geolocation

All 16 IP addresses in 71.78.72.80/28

71.78.72.80 71.78.72.81 71.78.72.82 71.78.72.83 71.78.72.84 71.78.72.85 71.78.72.86 71.78.72.87 71.78.72.88 71.78.72.89 71.78.72.90 71.78.72.91 71.78.72.92 71.78.72.93 71.78.72.94 71.78.72.95

BGP Routing

Live BGP anomalies →

Not announced as an exact prefix — covered by the announced supernet 71.78.0.0/16.

Announced prefix

71.78.0.0/16

Origin AS

AS11427

Announcement samples

9,787

Last seen

2026-07-22 22:02:12

Frequently Asked Questions

What is 71.78.72.80/28?

71.78.72.80/28 is a CIDR network block containing 16 IPv4 addresses (from 71.78.72.80 to 71.78.72.95). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 71.78.72.80/28 network?

The 71.78.72.80/28 range is allocated to Charter Communications, Inc and announced via AS11427 from United States.

How many IP addresses are in 71.78.72.80/28?

71.78.72.80/28 contains exactly 16 usable IPv4 addresses. A /28 prefix length means 16 addresses are covered by this single routing entry.

Last updated: 2026-07-22 22:10:35 UTC