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 28
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 2 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

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
204.100.220.2 ██████████ 1
204.100.230.220 ██████████ 1
204.100.155.42 ██████████ 1
204.100.65.241 ██████████ 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
204.100.224.2 AS18558 Riverside County Office of Education 1.69ms from Los Angeles, US
204.100.137.38 AS18558 Riverside County Office of Education 2.09ms from Los Angeles, US
204.100.254.229 AS18558 Riverside County Office of Education 1.93ms from Los Angeles, US
204.100.229.65 AS18558 Riverside County Office of Education 1.88ms from Los Angeles, US
204.100.171.0 AS18558 Riverside County Office of Education 3.00ms from Los Angeles, US
204.100.105.1 AS18558 Riverside County Office of Education 1.96ms from Los Angeles, US
2607:f708::1 AS18558 Riverside County Office of Education 1.96ms from Los Angeles, US
204.100.138.251 AS18558 Riverside County Office of Education 2.24ms from Los Angeles, US
204.100.252.197 AS18558 Riverside County Office of Education 4.18ms from Los Angeles, US
204.100.125.2 AS18558 Riverside County Office of Education 9.93ms from Los Angeles, US
204.100.223.1 AS18558 Riverside County Office of Education 9.39ms from Los Angeles, US
204.100.134.249 AS18558 Riverside County Office of Education 1.94ms from Los Angeles, US
204.100.169.57 AS18558 Riverside County Office of Education 1.91ms from Los Angeles, US
204.100.119.65 AS18558 Riverside County Office of Education 1.98ms from Los Angeles, US
204.100.124.65 AS18558 Riverside County Office of Education 1.89ms from Los Angeles, US
204.100.155.142 AS18558 Riverside County Office of Education 2.35ms from Los Angeles, US
204.100.114.65 AS18558 Riverside County Office of Education 8.23ms from Los Angeles, US
204.100.158.65 AS18558 Riverside County Office of Education 1.93ms from Los Angeles, US
204.100.214.65 AS18558 Riverside County Office of Education 1.91ms from Los Angeles, US
204.100.194.1 AS18558 Riverside County Office of Education 11.78ms from Los Angeles, US
204.100.184.40 AS18558 Riverside County Office of Education 3.05ms from Los Angeles, US
204.100.226.1 AS18558 Riverside County Office of Education 1.97ms from Los Angeles, US
204.100.157.1 AS18558 Riverside County Office of Education 2.54ms from Los Angeles, US
204.100.129.65 AS18558 Riverside County Office of Education 1.94ms from Los Angeles, US
204.100.244.233 AS18558 Riverside County Office of Education 1.89ms 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
131.174.78.30 AS1103 SURF B.V. 3.14ms from Amsterdam, NL
71.219.14.254 AS19901 Brightspeed 6.73ms from Ashburn, US
221.211.178.158 AS4837 CHINA UNICOM China169 Backbone 16.95ms from Changchun, CN
18.118.21.46 AS16509 Amazon.com, Inc. 0.71ms from Columbus, US
93.160.162.238 AS3292 TDC Holding A/S 2.09ms from Copenhagen, DK
65.101.235.222 AS209 CenturyLink Communications, LLC 3.28ms from Denver, US
76.139.158.190 AS7922 Comcast Cable Communications, LLC 10.26ms from Flint, US
51.107.149.46 AS8075 Microsoft Corporation 0.65ms from Geneve, CH
200.35.162.126 AS26617 Navega.com S.A. 1.74ms from Guatemala City, GT
75.85.104.174 AS20001 Charter Communications Inc 5.35ms from Honolulu, US
165.139.189.30 AS11686 Zayo Bandwidth 6.31ms from Indianapolis, US
178.185.77.238 AS12389 PJSC Rostelecom 0.89ms from Krasnoyarsk, RU
60.50.112.126 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 3.38ms from Kuala Lumpur, MY
116.9.6.142 AS4134 CHINANET-BACKBONE 2.93ms from Nanning, CN
27.126.219.126 AS45474 NEXUSGUARD LIMITED 0.23ms from Sao Paulo, BR
112.177.236.78 AS4766 Korea Telecom 1.88ms from Seoul, KR
49.235.250.14 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.42ms from Shanghai, CN
219.75.50.254 AS9506 Singtel Fibre Broadband 1.65ms from Singapore, SG
51.21.94.222 AS16509 Amazon.com, Inc. 0.13ms from Stockholm, SE
59.124.141.254 AS3462 Data Communication Business Group 0.89ms from Taipei, TW
126.115.10.142 AS17676 SoftBank Corp. 4.94ms from Tokyo, JP
203.174.79.222 AS17707 AS for DATAHOTEL, which is one of iDC in Japan, 0.69ms from Tokyo, JP
202.211.128.62 AS4725 SoftBank Corp. 3.47ms from Tokyo, JP
173.91.181.78 AS10796 Charter Communications Inc 14.06ms from Washington, US
103.174.7.254 AS137399 KernWi-Fi Pty Ltd 0.58ms from Adelaide, AU

Traceroute

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

$
traceroute -a -n -q1 -f4 -m9 204.100.128.169
traceroute to 204.100.128.169 (204.100.128.169): 9 hops max, 52 byte packets
4 [AS3356] 4.35.156.66 149.856 ms
5 [AS2152] 137.164.11.87 151.42 ms
6 [AS2152] 137.164.1.111 151.479 ms
7 *
8 *
9 *
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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