138.23.0.0/16

AS6106  ·  University of California, Riverside

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Summary

Country United States
Domain ucr.edu
ASN AS6106
Registry ARIN
ID UCRNET

WHOIS Details

NetHandle:      NET-138-23-0-0-1
OrgID:          UNIVER-211-Z
Parent:         NET-138-0-0-0-0
NetName:        UCRNET
NetRange:       138.23.0.0 - 138.23.255.255
NetType:        allocation
RegDate:        1990-01-24
Updated:        2024-01-17
TechHandle:     SYSTE802-ARIN
AbuseHandle:    ABUSE1631-ARIN
NOCHandle:      SYSTE802-ARIN
Source:         ARIN


OrgID:          UNIVER-211-Z
OrgName:        University of California, Riverside
CanAllocate:    
Street:         University of California, Riverside
Street:         Computing and Communications
City:           Riverside
State/Prov:     CA
Country:        US
PostalCode:     92521
RegDate:        2024-01-02
Updated:        2024-01-02
OrgAdminHandle: KENNE340-ARIN
OrgTechHandle:  FISHE693-ARIN
OrgTechHandle:  KENNE340-ARIN
OrgTechHandle:  SYSTE802-ARIN
OrgAbuseHandle: ABUSE1631-ARIN
OrgDNSHandle:   SYSTE802-ARIN
Source:         ARIN


POCHandle:      KENNE340-ARIN
IsRole:         N
LastName:       Kennedy
FirstName:      Michael
Street:         Computing and Communications Bldg.
City:           Riverside
State/Prov:     CA
Country:        US
PostalCode:     92521
RegDate:        2016-04-19
Updated:        2024-06-26
OfficePhone:    +1-951-827-4875
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      FISHE693-ARIN
IsRole:         N
LastName:       Fisher
FirstName:      Jeremy
Street:         900 University Ave.
City:           Riverside
State/Prov:     CA
Country:        US
PostalCode:     92521
RegDate:        2023-01-18
Updated:        2023-01-18
OfficePhone:    +1-951-827-4826
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      SYSTE802-ARIN
IsRole:         Y
LastName:       Systems Engineering
FirstName:      
Street:         900 University Ave.
City:           Riverside
State/Prov:     CA
Country:        US
PostalCode:     92508
RegDate:        2023-01-23
Updated:        2023-01-23
OfficePhone:    +1-951-827-1012
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      ABUSE1631-ARIN
IsRole:         Y
LastName:       Abuse
FirstName:      
Street:         University of California, Riverside
Street:         Computing and Communications
City:           Riverside
State/Prov:     CA
Country:        US
PostalCode:     92521
RegDate:        2007-04-09
Updated:        2023-01-18
OfficePhone:    +1-951-827-4875
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 138.0.0.0/8

Range ASN Company Num of IPs
138.190.0.0/16 AS3303 Berne, Switzerland 65,536
138.67.0.0/16 AS36704 Colorado School of Mines 65,536
138.116.0.0/16 AS33004 SUNY Empire State University 65,536
138.49.0.0/16 AS3128 University of Wisconsin-La Crosse 65,536
138.81.0.0/16 AS3303 ISO Central Secretariat 65,536
138.26.0.0/16 AS3452 University of Alabama at Birmingham - University Computer Center 65,536
138.52.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.107.0.0/16 AS2497 OLYMPUS CORPORATION 65,536
138.210.0.0/16 AS2379 CenturyLink Communications, LLC 65,536
138.201.0.0/16 AS24940 Server Block 65,536
138.115.0.0/16 AS270 National Aeronautics and Space Administration 65,536
138.77.0.0/16 AS24433 Central Queensland University 65,536
138.62.0.0/16 AS25400 Norwegian State Railways 65,536
138.223.0.0/16 AS3303 65,536
138.86.0.0/16 AS15295 University of Northern Colorado 65,536
138.111.0.0/16 AS16509 Amazon Technologies Inc. 65,536
138.15.0.0/16 AS10753 NEC Laboratories America, Inc. 65,536
138.90.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.101.0.0/16 AS16509 Nikkei Inc. 65,536
138.9.0.0/16 AS18663 University of the Pacific 65,536
138.254.0.0/16 AS243 L3Harris Technologies, Inc. 65,536
138.63.0.0/16 AS1715 Centre Europeen de Recherches et Formation Avancee en Calcul Scientifique 65,536
138.237.0.0/16 AS18791 Texas Christian University 65,536
138.37.0.0/16 AS198864 Queen Mary University of London 65,536
138.29.0.0/16 AS22742 Coast Guard Academy 65,536
138.106.0.0/16 AS202116 SCANIA CV AB 65,536
138.220.0.0/16 AS10497 IBRD 65,536
138.240.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.210.0.0/16 AS22561 CenturyLink Communications, LLC 65,536
138.210.0.0/16 AS209 CenturyLink Communications, LLC 65,536
138.210.0.0/16 AS11398 CenturyLink Communications, LLC 65,536
138.210.0.0/16 AS14921 CenturyLink Communications, LLC 65,536
138.130.0.0/16 AS1221 Telstra Limited 65,536
138.217.0.0/16 AS1221 Telstra Limited 65,536
138.189.0.0/16 AS12511 Post CH AG 65,536
138.191.0.0/16 AS12511 Post CH AG 65,536
138.246.0.0/16 AS12816 Ludwig-Maximilians-Universitaet Muenchen 65,536
138.70.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.92.0.0/16 AS11482 Canisius College 65,536
138.41.0.0/16 AS137 DIR-GARR - Roma 65,536
138.27.0.0/16 AS1540 Headquarters, USAISC 65,536
138.22.0.0/16 AS1853 GeoSphere Austria 65,536
138.236.0.0/16 AS17234 Gustavus Adolphus College 65,536
138.243.0.0/16 AS23779 NTT Communications Corporation 65,536
138.103.0.0/16 AS15830 AB Sandvik 65,536
138.50.0.0/16 AS1565 Headquarters, USAISC 65,536
138.232.0.0/16 AS1110 University of Innsbruck 65,536
138.34.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.47.0.0/16 AS19564 Louisiana Tech University 65,536
138.110.0.0/16 AS396128 Mount Holyoke College 65,536

Hosted domains

There are 10 domain names hosted across 8 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
138.23.162.6 combai.org 2
138.23.211.205 hirokinishimura.com 2
138.23.59.158 oomyceteworld.net 1
138.23.51.55 fungalgenome.org 1
138.23.243.73 topangamessenger.com 1
138.23.51.57 dynamiterice.org 1
138.23.226.208 jimmycalanchini.com 1
138.23.24.131 itsdrtest.com 1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity

Pingable IPs

1,879 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
138.23.74.211 AS6106 University of California, Riverside 5.01ms from Los Angeles, US
138.23.203.96 AS6106 University of California, Riverside 4.95ms from Los Angeles, US
138.23.229.163 AS6106 University of California, Riverside 4.95ms from Los Angeles, US
138.23.103.173 AS6106 University of California, Riverside 4.97ms from Los Angeles, US
138.23.202.1 AS6106 University of California, Riverside 5.06ms from Los Angeles, US
138.23.58.167 AS6106 University of California, Riverside 5.00ms from Los Angeles, US
138.23.86.1 AS6106 University of California, Riverside 5.05ms from Los Angeles, US
138.23.220.10 AS6106 University of California, Riverside 4.89ms from Los Angeles, US
138.23.123.1 AS6106 University of California, Riverside 5.07ms from Los Angeles, US
138.23.223.194 AS6106 University of California, Riverside 5.01ms from Los Angeles, US
138.23.221.186 AS6106 University of California, Riverside 4.96ms from Los Angeles, US
138.23.31.117 AS6106 University of California, Riverside 5.07ms from Los Angeles, US
138.23.196.134 AS6106 University of California, Riverside 5.00ms from Los Angeles, US
138.23.19.129 AS6106 University of California, Riverside 4.90ms from Los Angeles, US
138.23.98.194 AS6106 University of California, Riverside 4.96ms from Los Angeles, US
138.23.60.146 AS6106 University of California, Riverside 5.03ms from Los Angeles, US
138.23.57.120 AS6106 University of California, Riverside 4.91ms from Los Angeles, US
138.23.102.247 AS6106 University of California, Riverside 4.87ms from Los Angeles, US
138.23.147.79 AS6106 University of California, Riverside 5.11ms from Los Angeles, US
138.23.68.117 AS6106 University of California, Riverside 4.84ms from Los Angeles, US
138.23.109.35 AS6106 University of California, Riverside 4.92ms from Los Angeles, US
138.23.190.69 AS6106 University of California, Riverside 4.97ms from Los Angeles, US
138.23.172.204 AS6106 University of California, Riverside 4.95ms from Los Angeles, US
138.23.200.239 AS6106 University of California, Riverside 4.95ms from Los Angeles, US
138.23.114.161 AS6106 University of California, Riverside 4.96ms 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
24.30.93.80 AS7922 Comcast Cable Communications, LLC 4.29ms from Atlanta, US
41.129.207.160 AS24863 Link Egypt (Link.NET) 9.12ms from Cairo, EG
45.232.55.0 AS267260 R. G. MENEZES DE ARAÚJO INFOR 4.34ms from Campina Grande, BR
171.229.83.224 AS7552 Viettel Group 2.40ms from Hanoi, VN
212.42.198.160 AS264617 GRUPO PANAGLOBAL 15 S.A 0.20ms from Lugano, CH
112.204.178.48 AS9299 Philippine Long Distance Telephone Company 1.19ms from Manila, PH
67.86.131.48 AS6128 Cablevision Systems Corp. 5.57ms from New York City, US
212.20.49.96 AS12389 PJSC Rostelecom 0.76ms from Novosibirsk, RU
126.95.226.160 AS17676 SoftBank Corp. 4.08ms from Osaka, JP
59.11.25.112 AS4766 Korea Telecom 1.50ms from Seoul, KR
222.96.38.16 AS4766 Korea Telecom 7.59ms from Seoul, KR
194.69.200.64 AS39024 Nastech OOD 6.04ms from Sofia, BG
125.229.208.160 AS3462 Data Communication Business Group 1.08ms from Taipei, TW
126.11.129.16 AS17676 SoftBank Corp. 3.95ms from Tokyo, JP
23.220.114.80 AS16625 Akamai Technologies, Inc. 0.46ms from Amsterdam, NL
52.143.24.128 AS8075 Microsoft Corporation 0.22ms from Amsterdam, NL
98.169.1.144 AS22773 Cox Communications Inc. 4.33ms from Ashburn, US
104.188.7.128 AS7018 AT&T Enterprises, LLC 5.99ms from Atlanta, US
121.29.37.0 AS4837 CHINA UNICOM China169 Backbone 10.70ms from Beijing, CN
200.70.48.144 AS10834 Telefonica de Argentina 0.66ms from Buenos Aires, AR
179.38.4.96 AS22927 Telefonica de Argentina 1.64ms from Buenos Aires, AR
138.59.2.208 AS263739 NODONET S.A. 18.00ms from Buenos Aires, AR
144.24.82.192 AS31898 Oracle Corporation 0.12ms from Chuncheon, KR
113.166.229.144 AS45899 VNPT Corp 5.04ms from Da Nang, VN
130.61.224.32 AS31898 Oracle Corporation 0.42ms from Frankfurt am Main, DE

Traceroute

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

$
traceroute -a -n -q1 -f2 138.23.1.1
traceroute to 138.23.1.1 (138.23.1.1): 64 hops max, 52 byte packets
2 [AS6461] 64.125.81.145 0.189 ms
3 [AS6461] 64.125.19.142 0.422 ms
4 *
5 [AS2152] 198.32.251.2 0.357 ms
7 *
10 [AS6106] 138.23.1.1 5.667 ms
Measurement taken from IPinfo ProbeNet in Los Angeles, US
On

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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