Data as of Nov 6, 2026

38.237.0.0/16

Anonymizer · Datacenter proxy

Rackdog, LLC · space held by Cogent Communications, LLC

Announcement

this exact prefix

No RPKI

Announced by

AS398465

Type

Datacenter proxy

IPv4 market

Path

1 · Holder

Cogent Communications, LLC

record created Apr 16, 1991

2 · Leased from

Rackdog

for its owner Cogent Communications, LLC

3 · Announced by

AS398465 Rackdog, LLC

since Dec 2025 · 11 mo ago

4 · Use

Datacenter proxy

anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

Name	In 38.237.0.0/16	/24s
Rackdog	65,536100%	256

Leased from

Owners leasing their own space

Name	In 38.237.0.0/16	/24s
Cogent Communications, LLC	65,536100%	256

Lineage

How this block came to its use, oldest first. The whole IPv4 market →

38.237.0.0/16

From the registry to its use

Apr 16, 1991
Registry record
Cogent Communications, LLC
Direct Allocation (legacy, pre-1997)
38.0.0.0/8
Dec 2, 2025– today
Announced
AS398465 Rackdog, LLC
Hosting
Dec 8, 2025
Route object
Rackdog
RADB route object for AS398465 Rackdog, LLC, maintainer MAINT-AS398465
May 27, 2026
Assigned
RCN
Reassigned
38.237.0.0/16
Sep 18, 2026– today
Announced
AS174 Cogent Communications, LLC
as part of 38.0.0.0/8
38.0.0.0/8
today
Leased from
Rackdog
IP broker

Announcements

Less specific

Covering announcements

Prefix	Origin	Type	Anonymizer addresses	Operator	Leased from	Proxy exits	Holder	RPKI
38.0.0.0/8	AS174	Internet provider	68,3570.41%ISP proxy, Datacenter proxy, VPN	Proxy providerssold by Oxylabs, QuarkIP, Novada, HypeProxy, MyPrivateProxyVPN servicesoperated by Windscribe	IP broker Rackdog (part)	405,043 77,969 always on	Cogent Communications, LLC

Nesting

More-specifics by size

Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.

More specific

Announcements inside

Arrived

Sort

Prefix	Origin	Type	Leased from	Holder
38.237.0.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.1.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.2.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.3.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.4.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.5.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.6.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.7.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.8.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.9.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.10.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.11.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.12.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.13.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.14.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.15.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.16.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.17.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.18.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.19.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.20.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.21.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.22.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.23.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.24.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.25.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.26.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.27.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.28.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.29.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.30.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.31.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.32.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.33.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.34.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.35.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.36.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.37.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.38.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.39.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.40.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.41.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.42.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.43.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.44.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.45.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.46.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.47.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.48.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.49.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.50.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.51.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.52.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.53.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.54.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.55.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.56.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.57.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.58.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.59.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.60.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.61.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.62.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.63.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.64.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.65.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.66.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.67.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.68.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.69.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.70.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.71.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.72.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.73.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.74.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.75.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.76.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.77.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.78.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.79.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.80.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.81.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.82.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.83.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.84.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.85.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.86.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.87.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.88.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.89.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.90.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.91.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.92.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.93.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.94.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.95.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.96.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.97.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.98.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.99.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.100.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.101.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.102.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.103.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.104.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.105.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.106.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.107.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.108.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.109.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.110.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.111.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.112.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.113.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.114.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.115.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.116.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.117.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.118.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.119.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.120.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.121.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.122.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.123.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.124.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.125.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.126.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.127.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.128.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.129.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.130.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.131.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.132.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.133.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.134.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.135.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.136.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.137.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.138.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.139.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.140.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.141.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.142.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.143.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.144.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.145.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.146.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.147.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.148.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.149.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.150.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.151.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.152.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.153.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.154.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.155.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.156.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.157.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.158.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.159.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.160.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.161.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.162.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.163.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.164.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.165.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.166.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.167.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.168.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.169.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.170.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.171.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.172.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.173.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.174.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.175.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.176.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.177.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.178.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.179.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.180.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.181.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.182.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.183.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.184.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.185.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.186.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.187.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.188.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.189.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.190.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.191.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.192.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.193.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.194.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.195.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.196.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.197.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.198.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.199.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.200.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.201.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.202.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.203.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.204.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.205.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.206.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.207.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.208.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.209.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.210.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.211.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.212.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.213.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.214.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.215.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.216.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.217.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.218.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.219.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.220.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.221.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.222.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.223.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.224.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.225.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.226.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.227.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.228.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.229.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.230.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.231.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.232.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.233.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.234.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.235.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.236.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.237.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.238.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.239.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.240.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.241.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.242.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.243.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.244.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.245.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.246.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.247.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.248.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.249.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.250.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.251.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.252.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.253.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.254.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC
38.237.255.0/24 since Dec 2025	AS154395	Datacenter proxy	IP broker Rackdog	Cogent Communications, LLC

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
38.0.0.0/8	16,777,216	COGENT-A	Cogent Communications, LLC (COGC) · US	Direct Allocation	Apr 16, 1991	abuse@cogentco.com
└ 38.237.0.0/16	65,536	RACKDOG-CGNT-NET-116	RCN (C11605362) · US	Reassigned	May 27, 2026	abuse@cogentco.com via COGENT-A

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

IPv4 market

Holder

Holder in the market →

Organization: Cogent Communications, LLC
Handle: COGC
Range: 38.0.0.0/8
Registration type: Direct Allocation
Record created: Apr 16, 1991
Legacy: yes

Origin network

AS398465

Name: Rackdog, LLC
Type: Hosting
Registered: Jun 15, 2020
Domain: rackdog.com
Website: rackdog.com
Spamhaus ASN-DROP: not listed

38.237.0.0/16

Path

Operators, sellers and brokers

IP brokers

Owners leasing their own space

Lineage

From the registry to its use

Announcements

Covering announcements

More-specifics by size

Announcements inside

Registrations in this block

Network & registry

Holder

AS398465

Covering aggregate above, the prefix's own history below

Routing history

Route objects on the exact prefix

Registration for this announcement

Abuse contact