204.100.129.0/24

AS18558 · Riverside County Office of Education

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Summary

Country	United States
Domain	countyofriverside.us
ASN	AS18558
Parent Range	204.100.0.0/16
Registry	ARIN
ID	RCOEK-12NET

WHOIS Details

NetHandle:      NET-204-100-0-0-1
OrgID:          COUNTY-20
Parent:         NET-204-0-0-0-0
NetName:        RCOEK-12NET
NetRange:       204.100.0.0 - 204.100.255.255
NetType:        allocation
RegDate:        1994-07-13
Updated:        2025-10-20
TechHandle:     ELLIS608-ARIN
TechHandle:     WILKI325-ARIN
AbuseHandle:    WILKI325-ARIN
NOCHandle:      WILKI325-ARIN
Source:         ARIN


OrgID:          COUNTY-20
OrgName:        County of Riverside
CanAllocate:    
Street:         Information Technology Services
Street:         3939 Thirteenth Street
City:           Riverside
State/Prov:     CA
Country:        US
PostalCode:     92502
RegDate:        1994-07-13
Updated:        2025-10-20
OrgAdminHandle: WILKI325-ARIN
OrgTechHandle:  ELLIS608-ARIN
OrgTechHandle:  WILKI325-ARIN
OrgAbuseHandle: WILKI325-ARIN
OrgNOCHandle:   WILKI325-ARIN
OrgRoutingHandle:   WILKI325-ARIN
OrgDNSHandle:   WILKI325-ARIN
Source:         ARIN


POCHandle:      ELLIS608-ARIN
IsRole:         N
LastName:       Ellis
FirstName:      Jared
Street:         3939 Thirteenth Street
City:           Riverside
State/Prov:     CA
Country:        US
PostalCode:     92502
RegDate:        2025-09-12
Updated:        2025-09-12
OfficePhone:    +1-951-826-6556
Mailbox:        jellis@rcoe.us
Source:         ARIN


POCHandle:      WILKI325-ARIN
IsRole:         N
LastName:       Wilkinson
FirstName:      David
Street:         3939 Thirteenth Street
City:           Riverside
State/Prov:     CA
Country:        US
PostalCode:     92502
RegDate:        2025-01-08
Updated:        2025-09-04
OfficePhone:    +1-951-826-6560
Mailbox:        dwilkinson@rcoe.us
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 204.100.129.0/24

Range	ASN	Company	Num of IPs
204.100.0.0/16	AS18558	County of Riverside	65,536

Nearby Ranges

BGP prefixes that overlap with 204.100.0.0/16

Range	ASN	Company	Num of IPs
204.100.0.0/16	AS18558	County of Riverside	65,536

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
204.100.129.127	AS18558 Riverside County Office of Education	`1.82ms` 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
97.91.19.120	AS20115 Charter Communications LLC	`7.31ms` from Chicago, US
104.239.137.72	AS33070 Rackspace Hosting	`0.92ms` from Dallas, US
154.216.84.168	AS132839 POWER LINE DATACENTER	`1.05ms` from Hong Kong, HK
73.46.223.200	AS7922 Comcast Cable Communications, LLC	`6.83ms` from Miami, US
194.243.13.232	AS3269 Telecom Italia S.p.A.	`3.53ms` from Milan, IT
212.7.235.8	AS21453 Flex Ltd.	`2.66ms` from Moscow, RU
31.132.55.184	AS33659 Comcast Cable Communications, LLC	`1.75ms` from New York City, US
92.140.116.104	AS3215 Orange S.A.	`8.78ms` from Paris, FR
84.52.18.88	AS8728 AS INFONET	`0.49ms` from Tallinn, EE
77.116.81.168	AS25255 ==> TELE2 AUSTRIA <==	`9.35ms` from Vienna, AT
61.158.132.56	AS4837 CHINA UNICOM China169 Backbone	`2.15ms` from Zhengzhou, CN
135.236.31.120	AS8075 Microsoft Corporation	`0.27ms` from Amsterdam, NL
71.69.212.120	AS11426 Charter Communications Inc	`10.27ms` from Ashburn, US
91.17.187.72	AS3320 Deutsche Telekom AG	`3.34ms` from Berlin, DE
149.143.163.152	AS6079 RCN	`0.26ms` from Boston, US
200.137.222.248	AS1916 Rede Nacional de Ensino e Pesquisa	`3.46ms` from Brasilia, BR
176.239.99.248	AS16135 Turkcell A.S.	`19.77ms` from Istanbul, TR
116.253.238.120	AS4134 CHINANET-BACKBONE	`4.76ms` from Nanning, CN
64.168.104.216	AS7018 AT&T Enterprises, LLC	`4.12ms` from San Jose, US
115.86.206.40	AS17598 LG HelloVision Corp.	`2.91ms` from Seoul, KR
57.180.237.248	AS16509 Amazon.com, Inc.	`0.17ms` from Tokyo, JP
210.132.49.56	AS4713 NTT DOCOMO BUSINESS,Inc.	`18.55ms` from Tokyo, JP
197.2.62.216	AS37705 TOPNET	`2.06ms` from Tunis, TN
41.232.33.56	AS8452 TE-AS	`4.34ms` from Cairo, EG
35.9.220.8	AS231 Michigan State University	`3.26ms` from Detroit, US

Traceroute

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

traceroute -a -n -q1 204.100.129.66

traceroute to 204.100.129.66 (204.100.129.66): 64 hops max, 52 byte packets

1 [AS63023] 23.150.152.1 0.271 ms

2 [AS6461] 64.125.81.145 0.362 ms

3 *

4 *

5 [AS2152] 198.32.251.2 0.343 ms

6 [AS2152] 137.164.11.87 1.657 ms

7 [AS2152] 137.164.1.111 1.946 ms

8 [AS18558] 204.100.129.66 3.042 ms

Measurement taken from

IPinfo ProbeNet in Los Angeles, US

On March 29th 2026

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

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