Autonomous System details

AS18558

Riverside County Office of Education  ·  rcoe.us

United States

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AS18558 – Riverside County Office of Education

Field Value
Country United States
Website rcoe.us
Hosted domains 25
IPv4 addresses 71,936
IPv6 addresses 79,228,162,514,264,337,593,543,950,336
ASN type Education
Registry arin
Allocated 25 years ago on Sep 12, 2000
Updated 4 months ago on Oct 20, 2025

IP Ranges

Netblock Company Num of IPs
204.100.0.0/16 County of Riverside 65,536
204.26.32.0/20 Alvord Unified School District 4,096
204.26.48.0/21 Alvord Unified School District 2,048
204.100.8.0/21 County of Riverside 2,048
204.100.16.0/21 County of Riverside 2,048
204.100.32.0/22 County of Riverside 1,024
204.100.68.0/22 County of Riverside 1,024
204.100.136.0/22 County of Riverside 1,024
204.26.56.0/24 Alvord Unified School District 256
204.100.38.0/24 County of Riverside 256
204.100.40.0/24 County of Riverside 256
204.100.41.0/24 County of Riverside 256
204.100.43.0/24 County of Riverside 256
204.100.44.0/24 County of Riverside 256
204.100.56.0/24 County of Riverside 256
204.100.58.0/24 County of Riverside 256
204.100.59.0/24 County of Riverside 256
204.100.60.0/24 County of Riverside 256
204.100.61.0/24 County of Riverside 256
204.100.65.0/24 County of Riverside 256
204.100.66.0/24 County of Riverside 256
204.100.67.0/24 County of Riverside 256
204.100.72.0/24 County of Riverside 256
204.100.73.0/24 County of Riverside 256
204.100.74.0/24 County of Riverside 256
204.100.75.0/24 County of Riverside 256
204.100.76.0/24 County of Riverside 256
204.100.77.0/24 County of Riverside 256
204.100.78.0/24 County of Riverside 256
204.100.79.0/24 County of Riverside 256
204.100.80.0/24 County of Riverside 256
204.100.81.0/24 County of Riverside 256
204.100.82.0/24 County of Riverside 256
204.100.87.0/24 County of Riverside 256
204.100.88.0/24 County of Riverside 256
204.100.89.0/24 County of Riverside 256
204.100.90.0/24 County of Riverside 256
204.100.91.0/24 County of Riverside 256
204.100.92.0/24 County of Riverside 256
204.100.93.0/24 County of Riverside 256
204.100.94.0/24 County of Riverside 256
204.100.97.0/24 County of Riverside 256
204.100.98.0/24 County of Riverside 256
204.100.99.0/24 County of Riverside 256
204.100.103.0/24 County of Riverside 256
204.100.105.0/24 County of Riverside 256
204.100.106.0/24 County of Riverside 256
204.100.114.0/24 County of Riverside 256
204.100.115.0/24 County of Riverside 256
204.100.116.0/24 County of Riverside 256
204.100.117.0/24 County of Riverside 256
204.100.118.0/24 County of Riverside 256
204.100.119.0/24 County of Riverside 256
204.100.120.0/24 County of Riverside 256
204.100.121.0/24 County of Riverside 256
204.100.122.0/24 County of Riverside 256
204.100.123.0/24 County of Riverside 256
204.100.124.0/24 County of Riverside 256
204.100.125.0/24 County of Riverside 256
204.100.126.0/24 County of Riverside 256
204.100.127.0/24 County of Riverside 256
204.100.128.0/24 County of Riverside 256
204.100.129.0/24 County of Riverside 256
204.100.130.0/24 County of Riverside 256
204.100.131.0/24 County of Riverside 256
204.100.132.0/24 County of Riverside 256
204.100.133.0/24 County of Riverside 256
204.100.134.0/24 County of Riverside 256
204.100.149.0/24 County of Riverside 256
204.100.150.0/24 County of Riverside 256
204.100.151.0/24 County of Riverside 256
204.100.152.0/24 County of Riverside 256
204.100.153.0/24 County of Riverside 256
204.100.154.0/24 County of Riverside 256
204.100.155.0/24 County of Riverside 256
204.100.156.0/24 County of Riverside 256
204.100.157.0/24 County of Riverside 256
204.100.158.0/24 County of Riverside 256
204.100.159.0/24 County of Riverside 256
204.100.164.0/24 County of Riverside 256
204.100.165.0/24 County of Riverside 256
204.100.166.0/24 County of Riverside 256
204.100.167.0/24 County of Riverside 256
204.100.168.0/24 County of Riverside 256
204.100.169.0/24 County of Riverside 256
204.100.170.0/24 County of Riverside 256
204.100.171.0/24 County of Riverside 256
204.100.172.0/24 County of Riverside 256
204.100.173.0/24 County of Riverside 256
204.100.174.0/24 County of Riverside 256
204.100.175.0/24 County of Riverside 256
204.100.180.0/24 County of Riverside 256
204.100.181.0/24 County of Riverside 256
204.100.182.0/24 County of Riverside 256
204.100.183.0/24 County of Riverside 256
204.100.184.0/24 County of Riverside 256
204.100.185.0/24 County of Riverside 256
204.100.186.0/24 County of Riverside 256
204.100.187.0/24 County of Riverside 256
204.100.188.0/24 County of Riverside 256
204.100.189.0/24 County of Riverside 256
204.100.190.0/24 County of Riverside 256
204.100.191.0/24 County of Riverside 256
204.100.192.0/24 County of Riverside 256
204.100.193.0/24 County of Riverside 256
204.100.194.0/24 County of Riverside 256
204.100.200.0/24 County of Riverside 256
204.100.201.0/24 County of Riverside 256
204.100.202.0/24 County of Riverside 256
204.100.203.0/24 County of Riverside 256
204.100.204.0/24 County of Riverside 256
204.100.205.0/24 County of Riverside 256
204.100.206.0/24 County of Riverside 256
204.100.207.0/24 County of Riverside 256
204.100.208.0/24 County of Riverside 256
204.100.209.0/24 County of Riverside 256
204.100.210.0/24 County of Riverside 256
204.100.211.0/24 County of Riverside 256
204.100.212.0/24 County of Riverside 256
204.100.213.0/24 County of Riverside 256
204.100.214.0/24 County of Riverside 256
204.100.220.0/24 County of Riverside 256
204.100.223.0/24 County of Riverside 256
204.100.224.0/24 County of Riverside 256
204.100.225.0/24 County of Riverside 256
204.100.226.0/24 County of Riverside 256
204.100.228.0/24 County of Riverside 256
204.100.229.0/24 County of Riverside 256
204.100.230.0/24 County of Riverside 256
204.100.231.0/24 County of Riverside 256
204.100.232.0/24 County of Riverside 256
204.100.233.0/24 County of Riverside 256
204.100.234.0/24 County of Riverside 256
204.100.235.0/24 County of Riverside 256
204.100.236.0/24 County of Riverside 256
204.100.237.0/24 County of Riverside 256
204.100.238.0/24 County of Riverside 256
204.100.239.0/24 County of Riverside 256
204.100.242.0/24 County of Riverside 256
204.100.243.0/24 County of Riverside 256

Netblock Company
2607:f708::/32 Riverside County Office of Education
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WHOIS Details

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                                                ASHandle:       AS18558
                                                OrgID:          AS18558
                                                ASName:         AS18558
                                                ASNumber:       AS18558
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 25 domain names hosted across 7 IP addresses on this ASN.

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IP Address Domain Domains on this IP
204.100.65.93 ██████████ 20
204.100.155.40 ██████████ 2
204.26.34.4 ██████████ 2
204.100.230.220 ██████████ 1
204.100.155.42 ██████████ 1
204.100.220.2 ██████████ 1
204.100.65.241 ██████████ 1

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Peers

There are 3 peers for this ASN.

Peers Name
AS2152 CENIC
AS395643 Corona-Norco Unified School District
AS401974 Val Verde Unified School District
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ASN API & Database

Upstreams

There is 1 peer for this ASN.

upstreams Name
AS2152 CENIC
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ASN API & Database

Downstreams

There are 2 downstreams for this ASN.

Downstreams Name
AS395643 Corona-Norco Unified School District
AS401974 Val Verde Unified School District
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ASN API & Database

Pingable IPs

56 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
204.100.229.65 AS18558 Riverside County Office of Education 2.01ms from Los Angeles, US
204.100.158.65 AS18558 Riverside County Office of Education 1.98ms from Los Angeles, US
204.100.180.1 AS18558 Riverside County Office of Education 1.98ms from Los Angeles, US
204.100.192.239 AS18558 Riverside County Office of Education 10.36ms from Los Angeles, US
204.100.138.251 AS18558 Riverside County Office of Education 2.20ms from Los Angeles, US
204.100.242.1 AS18558 Riverside County Office of Education 9.10ms from Los Angeles, US
204.100.225.1 AS18558 Riverside County Office of Education 9.25ms from Los Angeles, US
204.100.232.123 AS18558 Riverside County Office of Education 7.84ms from Los Angeles, US
204.100.224.2 AS18558 Riverside County Office of Education 1.70ms from Los Angeles, US
204.100.16.192 AS18558 Riverside County Office of Education 9.75ms from Los Angeles, US
204.100.169.57 AS18558 Riverside County Office of Education 2.02ms from Los Angeles, US
204.100.125.21 AS18558 Riverside County Office of Education 5.76ms from Los Angeles, US
204.100.255.9 AS18558 Riverside County Office of Education 1.93ms from Los Angeles, US
204.100.157.13 AS18558 Riverside County Office of Education 2.31ms from Los Angeles, US
204.100.119.127 AS18558 Riverside County Office of Education 1.94ms from Los Angeles, US
204.100.136.1 AS18558 Riverside County Office of Education 2.19ms from Los Angeles, US
204.100.105.1 AS18558 Riverside County Office of Education 1.97ms from Los Angeles, US
204.100.233.65 AS18558 Riverside County Office of Education 2.03ms from Los Angeles, US
204.100.164.1 AS18558 Riverside County Office of Education 1.98ms from Los Angeles, US
204.100.243.1 AS18558 Riverside County Office of Education 5.95ms from Los Angeles, US
204.100.150.1 AS18558 Riverside County Office of Education 1.94ms from Los Angeles, US
204.100.230.222 AS18558 Riverside County Office of Education 7.72ms from Los Angeles, US
204.100.223.1 AS18558 Riverside County Office of Education 9.42ms from Los Angeles, US
204.100.252.197 AS18558 Riverside County Office of Education 4.23ms from Los Angeles, US
204.100.129.127 AS18558 Riverside County Office of Education 1.81ms from Los Angeles, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
185.69.240.174 AS36351 IBM Cloud 1.12ms from Amsterdam, NL
68.81.115.14 AS7922 Comcast Cable Communications, LLC 8.30ms from Ashburn, US
98.121.162.62 AS11426 Charter Communications Inc 13.13ms from Charlotte, US
168.103.218.254 AS209 CenturyLink Communications, LLC 0.96ms from Denver, US
54.171.47.206 AS16509 Amazon.com, Inc. 0.19ms from Dublin, IE
132.250.47.14 AS48 Navy Network Information Center (NNIC) 4.77ms from Manassas, US
104.55.248.126 AS7018 AT&T Enterprises, LLC 2.59ms from Miami, US
95.244.8.206 AS3269 Telecom Italia S.p.A. 1.58ms from Milan, IT
34.229.60.110 AS14618 Amazon.com, Inc. 0.59ms from Reston, US
163.21.140.254 AS1659 Taiwan Academic Network (TANet) Information Center 2.18ms from Taipei, TW
123.205.101.254 AS18049 Taiwan Infrastructure Network Technologie 4.64ms from Taipei, TW
59.114.201.254 AS3462 Data Communication Business Group 0.98ms from Taipei, TW
91.201.113.238 AS216071 SERVERS TECH FZCO 1.42ms from Amsterdam, NL
51.5.11.46 AS8075 Microsoft Corporation 1.66ms from Amsterdam, NL
184.102.23.254 AS209 CenturyLink Communications, LLC 9.46ms from Atlanta, US
203.151.147.142 AS4618 Internet Thailand Company Limited 2.96ms from Bangkok, TH
197.162.78.206 AS24863 Link Egypt (Link.NET) 11.42ms from Cairo, EG
35.159.61.158 AS16509 Amazon.com, Inc. 0.11ms from Frankfurt am Main, DE
23.138.228.254 AS63023 GTHost 0.22ms from Frankfurt am Main, DE
75.149.48.206 AS7922 Comcast Cable Communications, LLC 6.72ms from Fremont, US
139.9.217.158 AS55990 Huawei Cloud Service data center 1.54ms from Guangzhou, CN
195.255.194.94 AS719 Elisa Oyj 0.62ms from Helsinki, FI
152.80.229.222 AS5264 United States Department of Defense (DoD) 18.67ms from Los Angeles, US
6.15.203.254 AS668 United States Department of Defense (DoD) 1.71ms from Los Angeles, US
62.251.240.190 AS6713 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM 1.73ms from Rabat, MA

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

$
traceroute -a -n -q1 -m4 204.100.113.38
traceroute to 204.100.113.38 (204.100.113.38): 4 hops max, 52 byte packets
2 *
3 *
4 *
Measurement taken from IPinfo ProbeNet in Amsterdam, NL
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS18558 at robtex.

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