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	79,228,162,514,264,338,000,000,000,000
ASN type	Education
Registry	arin
Allocated	26 years ago on Sep 12, 2000
Updated	6 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	██████████	4
204.100.155.40	██████████	2
204.26.34.4	██████████	2
204.100.155.42	██████████	1
204.100.65.241	██████████	1
204.100.230.220	██████████	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

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

IP Address	ASN	Details
204.100.194.1	AS18558 Riverside County Office of Education	`11.06ms` from Los Angeles, US
204.100.220.18	AS18558 Riverside County Office of Education	`1.91ms` from Los Angeles, US
204.100.244.233	AS18558 Riverside County Office of Education	`2.03ms` from Los Angeles, US
204.100.136.1	AS18558 Riverside County Office of Education	`1.92ms` from Los Angeles, US
204.100.121.28	AS18558 Riverside County Office of Education	`4.34ms` from Los Angeles, US
204.100.37.129	AS18558 Riverside County Office of Education	`8.06ms` from Los Angeles, US
204.100.137.253	AS18558 Riverside County Office of Education	`2.07ms` from Los Angeles, US
204.100.180.1	AS18558 Riverside County Office of Education	`1.93ms` from Los Angeles, US
204.100.226.1	AS18558 Riverside County Office of Education	`1.94ms` from Los Angeles, US
204.100.155.27	AS18558 Riverside County Office of Education	`2.25ms` from Los Angeles, US
204.100.184.40	AS18558 Riverside County Office of Education	`3.11ms` from Los Angeles, US
204.100.105.1	AS18558 Riverside County Office of Education	`1.96ms` from Los Angeles, US
204.100.169.57	AS18558 Riverside County Office of Education	`1.94ms` from Los Angeles, US
204.100.210.41	AS18558 Riverside County Office of Education	`2.82ms` from Los Angeles, US
204.100.230.222	AS18558 Riverside County Office of Education	`8.26ms` from Los Angeles, US
204.100.158.65	AS18558 Riverside County Office of Education	`1.88ms` from Los Angeles, US
204.100.235.244	AS18558 Riverside County Office of Education	`5.41ms` from Los Angeles, US
204.100.129.127	AS18558 Riverside County Office of Education	`1.98ms` from Los Angeles, US
204.100.232.123	AS18558 Riverside County Office of Education	`8.37ms` from Los Angeles, US
204.100.126.228	AS18558 Riverside County Office of Education	`5.97ms` from Los Angeles, US
204.100.204.65	AS18558 Riverside County Office of Education	`2.03ms` from Los Angeles, US
204.100.64.6	AS18558 Riverside County Office of Education	`1.93ms` from Los Angeles, US
204.100.171.101	AS18558 Riverside County Office of Education	`2.27ms` from Los Angeles, US
204.100.115.50	AS18558 Riverside County Office of Education	`2.08ms` from Los Angeles, US
204.100.119.65	AS18558 Riverside County Office of Education	`1.95ms` 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
36.133.244.30	AS9808 China Mobile Communications Group Co., Ltd.	`0.70ms` from Beijing, CN
44.251.201.62	AS16509 Amazon.com, Inc.	`0.12ms` from Boardman, US
96.10.40.222	AS11426 Charter Communications Inc	`2.53ms` from Charlotte, US
219.77.163.254	AS4760 HKT Limited	`0.66ms` from Hong Kong, HK
122.37.247.142	AS17858 LG POWERCOMM	`1.97ms` from Incheon, KR
175.249.67.142	AS4766 Korea Telecom	`7.20ms` from Incheon, KR
78.165.243.62	AS9121 Turk Telekomunikasyon Anonim Sirketi	`5.63ms` from Istanbul, TR
110.73.2.158	AS4837 CHINA UNICOM China169 Backbone	`6.85ms` from Liuzhou, CN
76.171.91.190	AS20001 Charter Communications Inc	`5.03ms` from Los Angeles, US
94.126.244.254	AS48048 INDRA SISTEMAS, S.A.	`2.15ms` from Madrid, ES
89.179.138.62	AS8402 PJSC Vimpelcom	`0.73ms` from Moscow, RU
74.76.171.62	AS11351 Charter Communications Inc	`10.81ms` from New York City, US
202.61.246.254	AS197540 netcup GmbH	`0.36ms` from Nuernberg, DE
200.25.222.126	AS23487 CONECEL	`2.50ms` from Quito, EC
13.223.118.14	AS14618 Amazon.com, Inc.	`0.18ms` from Reston, US
52.9.208.254	AS16509 Amazon.com, Inc.	`0.13ms` from San Jose, US
180.227.246.30	AS17858 LG POWERCOMM	`1.37ms` from Seoul, KR
121.191.70.126	AS4766 Korea Telecom	`3.24ms` from Seoul, KR
118.48.161.126	AS4766 Korea Telecom	`1.60ms` from Seoul, KR
39.29.181.254	AS4766 Korea Telecom	`5.63ms` from Seoul, KR
219.70.80.254	AS9416 Hoshin Multimedia Center Inc.	`1.63ms` from Taipei, TW
58.114.112.254	AS9416 Hoshin Multimedia Center Inc.	`5.91ms` from Taipei, TW
223.75.172.158	AS9808 China Mobile Communications Group Co., Ltd.	`5.54ms` from Wuhan, CN
85.1.233.14	AS3303 Swisscom (Switzerland) Ltd	`0.65ms` from Zuerich, CH
152.1.102.78	AS11442 North Carolina State University	`15.24ms` 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 -f4 -m12 204.100.13.250

traceroute to 204.100.13.250 (204.100.13.250): 12 hops max, 52 byte packets

4 [AS3356] 4.35.156.66 47.616 ms

5 [AS2152] 137.164.11.87 49 ms

6 [AS2152] 137.164.1.111 48.946 ms

7 [AS18558] 204.100.254.134 49.388 ms

8 [AS18558] 204.100.254.133 49.387 ms

9 [AS18558] 204.100.254.134 49.736 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Atlanta, US

On April 13th 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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