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CIDR Range

23.88.248.0/21

2.0K IPs /21 United States ARIN
Addresses
2,048
2.0K
Sub-ranges
5+
within this block
PTR Density
0.0%
0 of 2.0K 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.

65/100
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 23.88.248.0/21

CIDRIPsOrganizationASNCountry
23.88.252.0/22 1.0K — — US
23.88.250.0/23 512 — — US
23.88.248.0/24 256 Frontier AS402671 US
23.88.248.0/24 256 Frontier AS402671 US
23.88.249.0/24 256 — — US

Geolocation

First and last addresses in 23.88.248.0/21

23.88.248.0/21 runs from 23.88.248.0 to 23.88.255.255.

First 16
Last 16

Not announced as an exact prefix — covered by the announced supernet 23.88.224.0/19.

Announced prefix
Origin AS
Announcement samples
14,418
Last seen
2026-08-09 20:11:53

Frequently Asked Questions

What is 23.88.248.0/21?

23.88.248.0/21 is a CIDR network block containing 2,048 IPv4 addresses (from 23.88.248.0 to 23.88.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 23.88.248.0/21 network?

The 23.88.248.0/21 range is allocated to an unknown organization from United States.

Last updated: 2026-11-03 06:24:09 UTC
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