AS number 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 28
Number of IPv4 71,936
Number of IPv6 79,228,162,514,264,337,593,543,950,336
ASN type Education
Registry arin
Allocated 25 years ago on Sep 12, 2000
Updated a month 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
204.100.165.0/24 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

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 28 domain names hosted across 8 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
204.100.67.3 ██████████ 1
204.100.65.241 ██████████ 1
204.100.220.2 ██████████ 1
204.100.230.220 ██████████ 1
204.100.155.42 ██████████ 1

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Peers

There are 2 peers for this ASN.

Peers Name
AS2152 CENIC
AS395643 Corona-Norco 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 is 1 peer for this ASN.

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

Pingable IPs

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

IP Address ASN Details
204.100.192.22 AS18558 Riverside County Office of Education 10.45ms from Los Angeles, US
204.100.209.65 AS18558 Riverside County Office of Education 2.02ms from Los Angeles, US
204.100.124.65 AS18558 Riverside County Office of Education 2.02ms from Los Angeles, US
204.100.129.65 AS18558 Riverside County Office of Education 2.10ms from Los Angeles, US
204.100.184.40 AS18558 Riverside County Office of Education 3.12ms from Los Angeles, US
204.100.134.225 AS18558 Riverside County Office of Education 2.02ms from Los Angeles, US
204.100.157.7 AS18558 Riverside County Office of Education 2.61ms from Los Angeles, US
204.100.194.1 AS18558 Riverside County Office of Education 12.38ms from Los Angeles, US
204.100.204.65 AS18558 Riverside County Office of Education 2.06ms from Los Angeles, US
204.100.105.1 AS18558 Riverside County Office of Education 2.19ms from Los Angeles, US
204.100.244.233 AS18558 Riverside County Office of Education 2.06ms from Los Angeles, US
204.100.252.197 AS18558 Riverside County Office of Education 4.32ms from Los Angeles, US
204.100.171.0 AS18558 Riverside County Office of Education 6.50ms from Los Angeles, US
204.100.169.57 AS18558 Riverside County Office of Education 2.07ms from Los Angeles, US
204.100.155.142 AS18558 Riverside County Office of Education 2.37ms from Los Angeles, US
204.100.226.1 AS18558 Riverside County Office of Education 2.01ms from Los Angeles, US
204.100.180.1 AS18558 Riverside County Office of Education 2.09ms from Los Angeles, US
204.100.136.1 AS18558 Riverside County Office of Education 2.26ms from Los Angeles, US
204.100.224.2 AS18558 Riverside County Office of Education 1.73ms from Los Angeles, US
204.100.233.65 AS18558 Riverside County Office of Education 2.11ms from Los Angeles, US
204.100.229.65 AS18558 Riverside County Office of Education 1.97ms from Los Angeles, US
204.100.149.1 AS18558 Riverside County Office of Education 9.33ms from Los Angeles, US
204.100.121.38 AS18558 Riverside County Office of Education 4.52ms from Los Angeles, US
204.100.119.65 AS18558 Riverside County Office of Education 2.14ms from Los Angeles, US
204.100.236.116 AS18558 Riverside County Office of Education 5.52ms 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
212.34.2.30 AS8697 Jordan Telecommunications PSC 1.48ms from Amman, JO
203.154.43.158 AS4618 Internet Thailand Company Limited 0.54ms from Bangkok, TH
182.145.127.14 AS4134 CHINANET-BACKBONE 6.29ms from Chengdu, CN
169.150.229.30 AS60068 Datacamp Limited 0.14ms from Chicago, US
222.253.23.110 AS45899 VNPT Corp 4.11ms from Da Nang, VN
209.91.104.14 AS852 TELUS Communications Inc. 0.53ms from Edmonton, CA
2.202.61.238 AS3209 Vodafone GmbH 7.57ms from Frankfurt am Main, DE
82.166.186.254 AS1680 Cellcom Fixed Line Communication L.P 12.56ms from Haifa, IL
31.19.154.254 AS3209 Vodafone GmbH 0.82ms from Hamburg, DE
42.121.21.254 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 3.74ms from Hangzhou, CN
113.181.199.190 AS45899 VNPT Corp 3.31ms from Hanoi, VN
70.189.105.254 AS22773 Cox Communications Inc. 7.91ms from Kansas City, US
42.93.236.222 AS4134 CHINANET-BACKBONE 11.65ms from Lanzhou, CN
78.155.146.254 AS15557 Societe Francaise Du Radiotelephone - SFR SA 4.60ms from Paris, FR
148.137.125.158 AS7150 Commonwealth University of Pennsylvania 10.54ms from Philadelphia, US
39.88.77.254 AS4837 CHINA UNICOM China169 Backbone 2.00ms from Qingdao, CN
189.106.69.254 AS7738 V tal 8.72ms from Rio de Janeiro, BR
104.214.91.94 AS8075 Microsoft Corporation 0.20ms from San Antonio, US
20.245.187.46 AS8075 Microsoft Corporation 0.56ms from San Jose, US
221.149.34.254 AS4766 Korea Telecom 1.40ms from Seoul, KR
119.192.105.62 AS4766 Korea Telecom 1.34ms from Seoul, KR
219.75.50.254 AS9506 Singtel Fibre Broadband 1.59ms from Singapore, SG
115.43.236.254 AS9416 Hoshin Multimedia Center Inc. 4.98ms from Taipei, TW
193.83.63.254 AS8447 A1 Telekom Austria AG 8.51ms from Vienna, AT
47.253.190.158 AS45102 Alibaba (US) Technology Co., Ltd. 0.32ms from Ashburn, US

Traceroute

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

$
traceroute -a -n -q1 -m6 204.100.39.26
traceroute to 204.100.39.26 (204.100.39.26): 6 hops max, 52 byte packets
2 *
3 [AS2152] 137.164.11.87 150.104 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Brussels, BE
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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