204.102.74.0/24

AS2152 · CENIC

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Summary

Country	United States
Domain	sfpl.org
ASN	AS2152
Parent Range	204.102.0.0/16
Registry	ARIN
ID	NET-204-102-74-0--255

WHOIS Details

NetHandle:      NET-204-102-74-0-1
OrgID:          SFPL-4
Parent:         NET-204-102-0-0-1
NetName:        NET-204-102-74-0--255
NetRange:       204.102.74.0 - 204.102.74.255
NetType:        reassignment
OriginAS:       2152
RegDate:        2013-12-17
Updated:        2013-12-17
Source:         ARIN


OrgID:          SFPL-4
OrgName:        San Francisco Public Library
CanAllocate:    
Street:         100 Larkin Street
Street:         Civic Center
City:           San Francisco
State/Prov:     CA
Country:        US
PostalCode:     94102
RegDate:        2013-12-17
Updated:        2013-12-17
OrgAdminHandle: SIN19-ARIN
OrgTechHandle:  SIN19-ARIN
OrgAbuseHandle: SIN19-ARIN
Source:         ARIN


POCHandle:      SIN19-ARIN
IsRole:         Y
LastName:       SFPL IT NETOPS
FirstName:      
Street:         100 Larkin Street
Street:         Civic Center
City:           San Francisco
State/Prov:     CA
Country:        US
PostalCode:     94102
RegDate:        2013-12-17
Updated:        2023-09-06
OfficePhone:    +1-415-557-4373
Mailbox:        site_admin@sfpl.org
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 204.102.74.0/24

Range	ASN	Company	Num of IPs
204.102.0.0/16	AS2152	CENIC	65,536

Nearby Ranges

BGP prefixes that overlap with 204.102.0.0/16

Range	ASN	Company	Num of IPs
204.102.0.0/16	AS2152	CENIC	65,536
204.102.236.0/22	AS2152	Kern Community College District	1,024
204.102.112.0/24	AS2152	Los Angeles Community College District	256
204.102.113.0/24	AS2152	California State University, Office of the Chancellor	256
204.102.0.0/24	AS2152	Cypress Community College	256
204.102.240.0/24	AS2152	Kern Community College District	256
204.102.48.0/24	AS2920	LA County Office Education, Huntington Beach School District	256
204.102.84.0/24	AS2152	Palo Verde Community College	256

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

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

IP Address	ASN	Details
204.102.74.254	AS2152 CENIC	`1.90ms` from San Jose, 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
98.230.20.136	AS7922 Comcast Cable Communications, LLC	`8.38ms` from Atlanta, US
66.148.39.136	AS36556 Wave Rural Connect, LLC	`11.72ms` from Dallas, US
69.110.34.136	AS7018 AT&T Enterprises, LLC	`19.30ms` from Dallas, US
179.190.203.232	AS28220 Alares Cabo Servicos de Telecomunicacoes S.A.	`3.34ms` from Joao Pessoa, BR
46.200.25.168	AS6849 JSC "Ukrtelecom"	`7.04ms` from Kyiv, UA
62.49.222.216	AS5378 Vodafone Limited	`10.31ms` from London, GB
195.154.179.216	AS12876 SCALEWAY S.A.S.	`0.48ms` from Paris, FR
39.90.23.152	AS4837 CHINA UNICOM China169 Backbone	`8.33ms` from Qingdao, CN
58.219.214.8	AS4134 CHINANET-BACKBONE	`9.22ms` from Shanghai, CN
52.192.224.216	AS16509 Amazon.com, Inc.	`0.31ms` from Tokyo, JP
123.225.48.248	AS4713 NTT Communications Corporation	`2.06ms` from Tokyo, JP
216.6.54.8	AS6453 TATA COMMUNICATIONS (AMERICA) INC	`0.51ms` from Tokyo, JP
1.197.226.40	AS4134 CHINANET-BACKBONE	`11.06ms` from Zhengzhou, CN
74.43.92.120	AS5650 Frontier Communications of America, Inc.	`13.20ms` from Ashburn, US
191.107.254.72	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`4.98ms` from Bogota, CO
27.12.134.136	AS4837 CHINA UNICOM China169 Backbone	`1.31ms` from Chongqing, CN
68.252.234.40	AS7018 AT&T Enterprises, LLC	`7.00ms` from Dallas, US
87.35.250.152	AS1213 HEAnet CLG	`6.42ms` from Dublin, IE
72.134.55.248	AS20001 Charter Communications Inc	`5.07ms` from Los Angeles, US
79.22.54.24	AS3269 Telecom Italia S.p.A.	`2.84ms` from Milan, IT
98.0.33.88	AS11351 Charter Communications Inc	`19.37ms` from New York City, US
179.193.21.216	AS26599 TELEFÔNICA BRASIL S.A	`2.79ms` from Novo Hamburgo, BR
217.109.181.72	AS3215 Orange S.A.	`8.08ms` from Paris, FR
4.242.223.40	AS8075 Microsoft Corporation	`0.45ms` from Phoenix, US
61.249.144.200	AS4670 Shinbiro	`1.49ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 204.102.74.254

traceroute to 204.102.74.254 (204.102.74.254): 64 hops max, 52 byte packets

1 [AS31898] 140.91.234.103 0.109 ms

2 [AS7029] 206.223.117.139 0.328 ms

3 [AS7029] 206.223.117.118 0.99 ms

4 [AS2152] 137.164.11.81 0.972 ms

5 [AS2152] 137.164.11.93 2.009 ms

6 [AS2152] 137.164.3.214 2.711 ms

7 [AS2152] 204.102.74.254 1.938 ms

Measurement taken from

IPinfo ProbeNet in San Jose, 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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