204.100.66.0/24

AS18558 · Riverside County Office of Education

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Summary

Country	United States
Domain	rcoe.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:        2025-09-03
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:        2025-09-11
OrgAdminHandle: WILKI325-ARIN
OrgTechHandle:  RD75-ARIN
OrgTechHandle:  WILKI325-ARIN
OrgAbuseHandle: RD75-ARIN
OrgAbuseHandle: WILKI325-ARIN
OrgNOCHandle:   RD75-ARIN
OrgNOCHandle:   WILKI325-ARIN
OrgRoutingHandle:   RD75-ARIN
OrgRoutingHandle:   WILKI325-ARIN
OrgDNSHandle:   RD75-ARIN
OrgDNSHandle:   WILKI325-ARIN
Source:         ARIN


POCHandle:      RD75-ARIN
IsRole:         N
LastName:       D'Souza
FirstName:      Richard
Street:         Riverside County Office of Education
Street:         3939 13th Street
City:           Riverside
State/Prov:     CA
Country:        US
PostalCode:     92502
RegDate:        1998-05-15
Updated:        2025-01-08
OfficePhone:    +1-951-826-6475
Mailbox:        rdsouza@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

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
169.45.249.216	AS36351 IBM Cloud	`0.49ms` from Ashburn, US
103.209.48.24	AS24060 KTB COMPUTER SERVICES COMPANY LIMITED	`1.65ms` from Bangkok, TH
62.169.115.168	AS2860 NOS COMUNICACOES, S.A.	`13.55ms` from Braga, PT
108.90.58.168	AS7018 AT&T Enterprises, LLC	`2.88ms` from Chicago, US
187.144.23.120	AS8151 UNINET	`5.83ms` from Guadalajara, MX
35.219.186.24	AS15169 Google LLC	`0.18ms` from Las Vegas, US
162.90.99.8	AS25844 Skadden, Arps, Slate, Meagher & Flom LLP	`1.49ms` from London, GB
51.6.5.72	AS6871 Plusnet	`2.58ms` from London, GB
86.250.31.72	AS3215 Orange S.A.	`11.58ms` from Paris, FR
67.118.218.56	AS7018 AT&T Enterprises, LLC	`4.21ms` from Redding, US
121.153.87.168	AS4766 Korea Telecom	`6.65ms` from Seoul, KR
59.189.80.56	AS140928 T20025	`0.84ms` from Singapore, SG
139.99.83.248	AS16276 OVH SAS	`0.18ms` from Singapore, SG
212.33.234.200	AS12768 JSC ER-Telecom Holding	`8.31ms` from Yekaterinburg, RU
34.85.221.104	AS396982 Google LLC	`0.11ms` from Ashburn, US
221.194.249.120	AS4837 CHINA UNICOM China169 Backbone	`12.03ms` from Beijing, CN
60.255.148.56	AS4837 CHINA UNICOM China169 Backbone	`2.91ms` from Chengdu, CN
147.252.26.104	AS1213 HEAnet CLG	`0.82ms` from Dublin, IE
93.191.55.40	AS38927 Net-Build GmbH	`4.11ms` from Frankfurt am Main, DE
223.199.241.56	AS4134 CHINANET-BACKBONE	`4.42ms` from Haikou, CN
14.241.224.40	AS45899 VNPT Corp	`1.06ms` from Ho Chi Minh City, VN
109.150.61.24	AS2856 British Telecommunications PLC	`2.55ms` from London, GB
184.176.41.8	AS22773 Cox Communications Inc.	`3.67ms` from Los Angeles, US
81.44.17.152	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.56ms` from Madrid, ES
97.106.218.8	AS33363 Charter Communications, Inc	`9.86ms` from Miami, US

Traceroute

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

traceroute -a -n -q1 -m5 204.100.66.180

traceroute to 204.100.66.180 (204.100.66.180): 5 hops max, 52 byte packets

1 [AS63023] 23.154.136.1 0.278 ms

2 [AS6461] 209.249.133.41 0.545 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Ashburn, US

On September 11th 2025

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.

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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