137.66.21.0/24 IP Address Range

Explore geolocation information for IP ranges, including the start and end addresses and their corresponding CIDR or prefix. See details about the networks and locations associated with each address. Understand how these IPs are organized and distributed across different networks.

IPv4 range intelligence

137.66.21.0/24

Anycast
256 (100.00%)
Responding IPs
240 (93.8%)
CDN
0 (0.00%)
RPKI valid
100.0%

Summary

137.66.21.0/24 holds 256 addresses spread across 1 country and 1 autonomous system, announced through 1 BGP prefix. The largest single share sits in United States at 100.00%. It is administered by ARIN, with registrations dating from 2022-04-29. 240 addresses answered ping and 256 are served over anycast.

Networks
1
BGP prefixes
1
Countries
1
Pingable IPs
240
Companies
1
Child ranges
0

IP Address Coverage

Mapped
256
Unmapped
0
Total addresses
256

Security

256 flagged addresses — 100.00% of 256 total.

Anonymous
00.00%
Known attacker
00.00%
Spam
00.00%
Bot
00.00%
Cloud provider
256100.00%
VPN
00.00%
Residential proxy
00.00%
Proxy
00.00%

Coverage

Address Space

100.0%

of the range is
announced in BGP

Routed
256 100.00%

Regional registry

  • ARIN100.00%

Routing security (RPKI)

100.0%

of announced space
has a valid route origin

Valid
256 100.00%

Autonomous systems

showing 1 of 1

ASNOperatorIPv4 routesIPv6 routesAddresses hereShare
AS40509
USFly.io, Inc.
 195 69 256
100.00%

Showing 1 of 1

All IP Ranges

showing 10 of 256

IP AddressFirst IPLast IPNo. of IPs
137.66.21.0 137.66.21.0137.66.21.01
137.66.21.1 137.66.21.1137.66.21.11
137.66.21.2 137.66.21.2137.66.21.21
137.66.21.3 137.66.21.3137.66.21.31
137.66.21.4 137.66.21.4137.66.21.41
137.66.21.5 137.66.21.5137.66.21.51
137.66.21.6 137.66.21.6137.66.21.61
137.66.21.7 137.66.21.7137.66.21.71
137.66.21.8 137.66.21.8137.66.21.81
137.66.21.9 137.66.21.9137.66.21.91