Autonomous System

AS13576 SDN Communications

ISPActiveUnited StatesARIN

AS13576 (SDNW-13576) is an ISP network operated by SDN Communications in United States, registered with ARIN. It has 68 IPv4 prefixes with 121,856 addresses and 3 IPv6 prefixes, which makes it the 2,067th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses121,856in 68 prefixes
IPv6 prefixes3≈ 8.9 × 10²⁸ addresses
Size rank#2,067of 82,200 active ASNs
Abuser scoreVery Low0.01% of its addresses flagged · method

Details

OrganizationSDN Communications
AS nameSDNW-13576
Websitesdncommunications.com
Country United States (US)
Network typeISP
RegistryARIN
Abuse contactarin.abuse@sdncommunications.com
Registered1999-07-08
Last updated2026-02-04

IPv4 prefixes

68 prefixes · 121,856 addresses
NetworkAddressesFirst – last address
66.115.192.0/1816,38466.115.192.0 – 66.115.255.255
208.53.192.0/1816,384208.53.192.0 – 208.53.255.255
216.106.192.0/1816,384216.106.192.0 – 216.106.255.255
216.249.192.0/1816,384216.249.192.0 – 216.249.255.255
64.33.224.0/198,19264.33.224.0 – 64.33.255.255
66.128.160.0/198,19266.128.160.0 – 66.128.191.255
66.231.0.0/198,19266.231.0.0 – 66.231.31.255
68.168.224.0/204,09668.168.224.0 – 68.168.239.255
209.151.176.0/204,096209.151.176.0 – 209.151.191.255
206.85.176.0/212,048206.85.176.0 – 206.85.183.255
38.191.156.0/221,02438.191.156.0 – 38.191.159.255
104.167.204.0/221,024104.167.204.0 – 104.167.207.255
142.202.132.0/221,024142.202.132.0 – 142.202.135.255
199.96.68.0/221,024199.96.68.0 – 199.96.71.255
216.106.216.0/221,024216.106.216.0 – 216.106.219.255
216.106.232.0/221,024216.106.232.0 – 216.106.235.255
66.115.252.0/2351266.115.252.0 – 66.115.253.255
66.128.166.0/2351266.128.166.0 – 66.128.167.255
162.120.74.0/23512162.120.74.0 – 162.120.75.255
170.199.220.0/23512170.199.220.0 – 170.199.221.255
208.53.198.0/23512208.53.198.0 – 208.53.199.255
216.249.222.0/23512216.249.222.0 – 216.249.223.255
216.249.224.0/23512216.249.224.0 – 216.249.225.255
216.249.242.0/23512216.249.242.0 – 216.249.243.255
64.33.252.0/2425664.33.252.0 – 64.33.252.255
The 25 largest of 68. The API and the database have all of them.

IPv6 prefixes

3 prefixes
  • 2607:fc00::/32
  • 2602:ff5b::/36
  • 2605:4b80:f000::/36

Query AS13576 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS13576&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS13576, with or without a key:

curl "https://api.ipapi.is/?q=66.115.192.1"

Largest networks in United States

AS749 United States Department of Defense (DoD)227,464,192 IPv4 addressesAS16509 Amazon.com, Inc.218,038,784 IPv4 addressesAS7018 AT&T Enterprises, LLC117,262,080 IPv4 addressesAS8075 Microsoft Corporation81,463,040 IPv4 addressesAS721 United States Department of Defense (DoD)73,070,080 IPv4 addressesAS7922 Comcast Cable Communications, LLC68,336,896 IPv4 addresses