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 4 days 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
204.26.34.4 ██████████ 2
204.100.155.40 ██████████ 2
204.100.67.3 ██████████ 1
204.100.220.2 ██████████ 1
204.100.155.42 ██████████ 1
204.100.65.241 ██████████ 1
204.100.230.220 ██████████ 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 ASN Database Download

Upstreams

There is 1 peer for this ASN.

upstreams Name
AS2152 CENIC
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ASN API ASN Database Download

Downstreams

There is 1 peer for this ASN.

Downstreams Name
AS395643 Corona-Norco Unified School District
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API ASN Database Download

Pingable IPs

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

IP Address ASN Details
204.100.155.133 AS18558 Riverside County Office of Education 2.39ms from Los Angeles, US
204.100.235.246 AS18558 Riverside County Office of Education 5.94ms from Los Angeles, US
204.100.209.65 AS18558 Riverside County Office of Education 1.97ms from Los Angeles, US
204.100.189.65 AS18558 Riverside County Office of Education 1.97ms from Los Angeles, US
204.100.255.9 AS18558 Riverside County Office of Education 1.97ms from Los Angeles, US
204.100.138.251 AS18558 Riverside County Office of Education 2.38ms from Los Angeles, US
204.100.149.1 AS18558 Riverside County Office of Education 9.49ms from Los Angeles, US
204.100.214.65 AS18558 Riverside County Office of Education 2.07ms from Los Angeles, US
204.100.121.38 AS18558 Riverside County Office of Education 4.41ms from Los Angeles, US
204.100.194.1 AS18558 Riverside County Office of Education 12.86ms from Los Angeles, US
204.100.192.22 AS18558 Riverside County Office of Education 10.53ms from Los Angeles, US
204.100.158.65 AS18558 Riverside County Office of Education 2.04ms from Los Angeles, US
204.100.254.229 AS18558 Riverside County Office of Education 1.98ms from Los Angeles, US
204.100.119.65 AS18558 Riverside County Office of Education 2.08ms from Los Angeles, US
204.100.223.1 AS18558 Riverside County Office of Education 9.48ms from Los Angeles, US
204.100.124.65 AS18558 Riverside County Office of Education 2.02ms from Los Angeles, US
204.100.114.65 AS18558 Riverside County Office of Education 2.01ms from Los Angeles, US
204.100.136.1 AS18558 Riverside County Office of Education 2.27ms from Los Angeles, US
204.100.252.197 AS18558 Riverside County Office of Education 4.38ms from Los Angeles, US
204.100.225.1 AS18558 Riverside County Office of Education 9.31ms from Los Angeles, US
204.100.233.65 AS18558 Riverside County Office of Education 2.02ms from Los Angeles, US
204.100.236.115 AS18558 Riverside County Office of Education 5.83ms from Los Angeles, US
204.100.171.0 AS18558 Riverside County Office of Education 2.60ms from Los Angeles, US
204.100.180.1 AS18558 Riverside County Office of Education 2.06ms from Los Angeles, US
204.100.125.2 AS18558 Riverside County Office of Education 11.08ms 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
79.154.140.110 AS3352 TELEFONICA DE ESPANA S.A.U. 1.19ms from Barcelona, ES
123.124.134.222 AS4808 China Unicom Beijing Province Network 3.55ms from Beijing, CN
209.99.204.126 AS12282 Selectronics Corp. 9.31ms from Boston, US
208.79.40.46 AS13822 Milton Academy 0.79ms from Boston, US
196.130.56.206 AS24835 Vodafone Data 12.58ms from Cairo, EG
23.31.81.238 AS7922 Comcast Cable Communications, LLC 5.61ms from Denver, US
109.77.22.110 AS15502 Vodafone Ireland Limited 4.00ms from Dublin, IE
87.119.203.14 AS61157 PlusServer GmbH 0.55ms from Duesseldorf, DE
35.159.61.158 AS16509 Amazon.com, Inc. 0.12ms from Frankfurt am Main, DE
124.72.98.94 AS4134 CHINANET-BACKBONE 5.67ms from Fuzhou, CN
42.1.116.254 AS131429 MOBIFONE Corporation 1.55ms from Ho Chi Minh City, VN
8.212.28.30 AS45102 Alibaba (US) Technology Co., Ltd. 0.58ms from Hong Kong, HK
18.60.181.174 AS16509 Amazon.com, Inc. 1.45ms from Hyderabad, IN
95.173.176.254 AS206849 OyunYoneticisi Marketing LTD 0.65ms from Istanbul, TR
92.57.230.254 AS12479 Orange Espagne SA 8.61ms from Madrid, ES
167.57.226.78 AS6057 Administracion Nacional de Telecomunicaciones 1.66ms from Montevideo, UY
31.38.17.142 AS5410 Bouygues Telecom SA 16.08ms from Paris, FR
75.144.195.254 AS7922 Comcast Cable Communications, LLC 7.84ms from Providence, US
27.209.221.126 AS4837 CHINA UNICOM China169 Backbone 7.08ms from Qingdao, CN
186.125.17.30 AS7303 Telecom Argentina S.A. 0.87ms from Rosario, AR
142.4.123.254 AS54600 PEG TECH INC 1.09ms from San Jose, US
121.163.50.254 AS4766 Korea Telecom 2.77ms from Seoul, KR
112.184.123.254 AS4766 Korea Telecom 5.57ms from Seoul, KR
121.161.94.62 AS4766 Korea Telecom 1.73ms from Seoul, KR
210.28.188.62 AS4538 China Education and Research Network Center 7.37ms from Shanghai, CN

Traceroute

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

$
traceroute -a -n -q1 -m5 204.100.176.26
traceroute to 204.100.176.26 (204.100.176.26): 5 hops max, 52 byte packets
1 [AS63023] 23.154.136.1 0.174 ms
3 *
4 *
5 *
Measurement taken from IPinfo ProbeNet in Ashburn, US
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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