Autonomous System details

AS18558

Riverside County Office of Education · rcoe.us

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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

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
204.100.115.50	AS18558 Riverside County Office of Education	`1.98ms` from Los Angeles, US
204.100.220.18	AS18558 Riverside County Office of Education	`1.92ms` from Los Angeles, US
204.100.214.65	AS18558 Riverside County Office of Education	`2.00ms` from Los Angeles, US
204.100.16.192	AS18558 Riverside County Office of Education	`9.75ms` from Los Angeles, US
204.100.125.21	AS18558 Riverside County Office of Education	`5.76ms` from Los Angeles, US
204.100.225.1	AS18558 Riverside County Office of Education	`9.25ms` from Los Angeles, US
204.100.157.13	AS18558 Riverside County Office of Education	`2.31ms` from Los Angeles, US
204.100.233.65	AS18558 Riverside County Office of Education	`2.03ms` from Los Angeles, US
204.100.204.65	AS18558 Riverside County Office of Education	`1.90ms` from Los Angeles, US
204.100.155.27	AS18558 Riverside County Office of Education	`2.23ms` from Los Angeles, US
204.100.127.9	AS18558 Riverside County Office of Education	`5.65ms` from Los Angeles, US
204.100.252.197	AS18558 Riverside County Office of Education	`4.23ms` from Los Angeles, US
204.100.192.239	AS18558 Riverside County Office of Education	`10.36ms` from Los Angeles, US
204.100.169.57	AS18558 Riverside County Office of Education	`2.02ms` from Los Angeles, US
204.100.255.9	AS18558 Riverside County Office of Education	`1.93ms` from Los Angeles, US
204.100.137.37	AS18558 Riverside County Office of Education	`2.02ms` from Los Angeles, US
204.100.105.1	AS18558 Riverside County Office of Education	`1.97ms` from Los Angeles, US
204.100.229.65	AS18558 Riverside County Office of Education	`2.01ms` from Los Angeles, US
204.100.65.27	AS18558 Riverside County Office of Education	`1.92ms` from Los Angeles, US
204.100.230.222	AS18558 Riverside County Office of Education	`7.72ms` from Los Angeles, US
204.100.149.1	AS18558 Riverside County Office of Education	`9.25ms` from Los Angeles, US
2607:f708::1	AS18558 Riverside County Office of Education	`1.88ms` from Los Angeles, US
204.100.124.65	AS18558 Riverside County Office of Education	`2.00ms` from Los Angeles, US
204.100.129.127	AS18558 Riverside County Office of Education	`1.81ms` from Los Angeles, US
204.100.243.1	AS18558 Riverside County Office of Education	`5.95ms` 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
91.201.113.238	AS216071 SERVERS TECH FZCO	`1.42ms` from Amsterdam, NL
171.100.121.46	AS7470 TRUE INTERNET Co.,Ltd.	`1.42ms` from Bangkok, TH
96.70.227.190	AS7922 Comcast Cable Communications, LLC	`4.30ms` from Boston, US
222.252.5.254	AS45899 VNPT Corp	`1.82ms` from Hanoi, VN
14.228.137.254	AS45899 VNPT Corp	`3.02ms` from Hanoi, VN
218.250.161.254	AS4760 HKT Limited	`1.26ms` from Hong Kong, HK
154.206.222.46	AS9294 GNET INC.	`0.82ms` from Hong Kong, HK
13.135.146.14	AS16509 Amazon.com, Inc.	`0.16ms` from London, GB
23.240.249.206	AS20001 Charter Communications Inc	`6.60ms` from Los Angeles, US
89.141.178.190	AS12430 VODAFONE ESPANA S.A.U.	`9.10ms` from Madrid, ES
94.126.244.254	AS48048 INDRA SISTEMAS, S.A.	`2.18ms` from Madrid, ES
75.63.72.158	AS7018 AT&T Enterprises, LLC	`3.20ms` from Miami, US
151.42.64.46	AS1267 WIND TRE S.P.A.	`5.81ms` from Milan, IT
193.49.96.30	AS2200 Renater	`8.70ms` from Milan, IT
68.129.53.158	AS701 Verizon Business	`2.22ms` from New York City, US
56.126.144.62	AS16509 Amazon.com, Inc.	`0.14ms` from Osasco, BR
73.199.156.190	AS7922 Comcast Cable Communications, LLC	`6.94ms` from Piscataway, US
188.165.189.126	AS16276 OVH SAS	`0.11ms` from Roubaix, FR
211.32.112.158	AS3786 LG DACOM Corporation	`5.09ms` from Seoul, KR
222.110.147.14	AS4766 Korea Telecom	`0.93ms` from Seoul, KR
220.255.153.190	AS9506 Singtel Fibre Broadband	`1.88ms` from Singapore, SG
95.192.78.158	AS3301 Telia Company AB	`18.70ms` from Stockholm, SE
60.245.36.62	AS9676 SaveCom Internation Inc.	`2.65ms` from Taipei, TW
124.255.8.46	AS4686 BEKKOAME INTERNET INC.	`19.99ms` from Tokyo, JP
123.176.104.30	AS9365 its communications Inc.	`1.01ms` from Tokyo, JP

Traceroute

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

traceroute -a -n -q1 -m5 204.100.31.178

traceroute to 204.100.31.178 (204.100.31.178): 5 hops max, 52 byte packets

1 [AS263812] 38.165.233.1 12.23 ms

2 [AS52468] 181.78.95.209 5.181 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Asuncion, PY

On February 16th 2026

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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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