204.100.66.0/24

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 204.100.66.0/24

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
43.111.225.200	AS45102 Alibaba (US) Technology Co., Ltd.	`0.32ms` from Ashburn, US
73.213.182.56	AS7922 Comcast Cable Communications, LLC	`7.89ms` from Ashburn, US
182.70.241.56	AS24560 Bharti Airtel Ltd., Telemedia Services	`2.02ms` from Indore, IN
103.148.195.88	AS139996 DINAS KOMUNIKASI DAN INFORMATIKA KABUPATEN TABANAN	`16.21ms` from Jakarta, ID
81.149.51.168	AS2856 British Telecommunications PLC	`2.68ms` from London, GB
76.128.60.200	AS7922 Comcast Cable Communications, LLC	`10.71ms` from Miami, US
217.12.40.40	AS198610 Beget LLC	`8.06ms` from Moscow, RU
68.32.96.168	AS7922 Comcast Cable Communications, LLC	`3.93ms` from Murfreesboro, US
117.93.130.184	AS4134 CHINANET-BACKBONE	`5.31ms` from Nanjing, CN
217.232.243.152	AS3320 Deutsche Telekom AG	`4.04ms` from Nuernberg, DE
3.85.79.152	AS14618 Amazon.com, Inc.	`0.58ms` from Reston, US
5.16.30.248	AS51035 JSC "ER-Telecom Holding"	`7.78ms` from Samara, RU
67.188.188.216	AS7922 Comcast Cable Communications, LLC	`6.58ms` from San Jose, US
47.101.55.216	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.69ms` from Shanghai, CN
156.230.14.24	AS131618 Carl International Information ltd.	`0.23ms` from Taipei, TW
82.180.95.72	AS51978 WEMACOM Telekommunikation GmbH	`8.60ms` from Amsterdam, NL
13.81.40.120	AS8075 Microsoft Corporation	`0.25ms` from Amsterdam, NL
178.93.51.232	AS22773 Cox Communications Inc.	`2.17ms` from Ashburn, US
47.89.159.24	AS45102 Alibaba (US) Technology Co., Ltd.	`0.28ms` from Ashburn, US
47.42.237.248	AS20115 Charter Communications LLC	`16.56ms` from Atlanta, US
172.220.130.232	AS20115 Charter Communications LLC	`11.11ms` from Atlanta, US
44.243.116.136	AS16509 Amazon.com, Inc.	`0.52ms` from Boardman, US
81.248.59.56	AS3215 Orange S.A.	`1.78ms` from Cayenne, GF
209.133.227.40	AS396982 Google LLC	`0.14ms` from Council Bluffs, US
176.71.37.40	AS1257 Tele2 Sverige AB	`0.49ms` from Goeteborg, SE

Traceroute

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

traceroute -a -n -q1 -m4 204.100.66.74

traceroute to 204.100.66.74 (204.100.66.74): 4 hops max, 52 byte packets

1 [AS136188] 110.42.107.1 16.148 ms

2 *

3 *

4 *

Measurement taken from

IPinfo ProbeNet in Ningbo, CN

On March 28th 2026

What are IP address ranges?

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Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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