137.66.0.0/16 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

137.66.0.0/16

Anycast
16,128 (24.61%)
Responding /24s
76 (of 256)
CDN
0 (0.00%)
RPKI valid
100.0%

Summary

137.66.0.0/16 holds 65,536 addresses spread across 2 countries and 4 autonomous systems, announced through 46 BGP prefixes. The largest single share sits in United States at 99.98%. It is administered by ARIN, with registrations dating from 2022-04-27. 15,273 addresses answered ping and 16,128 are served over anycast.

Networks
4
BGP prefixes
46
Countries
2
Pingable IPs
15,273
Companies
4
Child ranges
256

IP Address Coverage

Mapped
65,536
Unmapped
0
Total addresses
65,536

Security

16,384 flagged addresses — 25.00% of 65,536 total.

Anonymous
70.01%
Known attacker
80.01%
Spam
00.00%
Bot
00.00%
Cloud provider
16,38425.00%
VPN
70.01%
Residential proxy
00.00%
Proxy
3<0.01%

Coverage

Address Space

34.4%

of the range is
announced in BGP

Routed
22,528 34.38%
Assigned, not routed
43,008 65.62%

Regional registry

  • ARIN100.00%

Routing security (RPKI)

100.0%

of announced space
has a valid route origin

Valid
22,528 100.00%

/16 range map

Explore the most reachable child ranges.

Autonomous systems

showing 4 of 4

ASNOperatorIPv4 routesIPv6 routesAddresses hereShare
AS40509
USFly.io, Inc.
 195 69 16,128
71.59%
AS30103
USZoom Communications, Inc.
 314 84 5,120
22.73%
AS16789
USYardi Systems, LLC
 19 0 1,024
4.55%
AS13335
USCloudflare, Inc.
 2,716 3,180 256
1.14%

Showing 4 of 4

All IP Ranges

showing 10 of 256

PrefixFirst IPLast IPNo. of IPsPingableAnycastBogon / special‑useCategory
137.66.0.0/24 137.66.0.0137.66.0.255256 23591.80% 256100.00% 0 Anycast
137.66.1.0/24 137.66.1.0137.66.1.255256 24595.70% 256100.00% 0 Anycast
137.66.2.0/24 137.66.2.0137.66.2.255256 23089.84% 256100.00% 0 Anycast
137.66.3.0/24 137.66.3.0137.66.3.255256 24595.70% 256100.00% 0 Anycast
137.66.4.0/24 137.66.4.0137.66.4.255256 23591.80% 256100.00% 0 Anycast
137.66.5.0/24 137.66.5.0137.66.5.255256 23993.36% 256100.00% 0 Anycast
137.66.6.0/24 137.66.6.0137.66.6.255256 24394.92% 256100.00% 0 Anycast
137.66.7.0/24 137.66.7.0137.66.7.255256 24093.75% 256100.00% 0 Anycast
137.66.8.0/24 137.66.8.0137.66.8.255256 23892.97% 256100.00% 0 Anycast
137.66.9.0/24 137.66.9.0137.66.9.255256 24194.14% 256100.00% 0 Anycast