1. All IP Ranges
  2. 138.0.0.0/8
  3. 138.123.0.0/16
  4. AS46887  | 138.123.0.0/16

138.123.0.0/16

AS46887  ·  Crown Castle Fiber LLC

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Summary

Country United States
Domain dtcc.edu
ASN AS46887
Registry ARIN
ID DELAWARETECH

WHOIS Details

NetHandle:      NET-138-123-0-0-1
OrgID:          DTCC-2
Parent:         NET-138-0-0-0-0
NetName:        DELAWARETECH
NetRange:       138.123.0.0 - 138.123.255.255
NetType:        allocation
RegDate:        1990-05-16
Updated:        2023-06-24
TechHandle:     CDC15-ARIN
TechHandle:     HENNE71-ARIN
AbuseHandle:    DTCCA-ARIN
NOCHandle:      DTCCA-ARIN
Source:         ARIN


OrgID:          DTCC-2
OrgName:        Delaware Technical Community College
CanAllocate:    
Street:         100 Campus Drive
Street:         Suite ETB 722
City:           Dover
State/Prov:     DE
Country:        US
PostalCode:     19904
RegDate:        1990-05-16
Updated:        2023-06-24
OrgAdminHandle: HENNE71-ARIN
OrgTechHandle:  CDC15-ARIN
OrgTechHandle:  HENNE71-ARIN
OrgAbuseHandle: DTCCA-ARIN
OrgNOCHandle:   DTCCA-ARIN
OrgRoutingHandle:   DTCCA-ARIN
OrgDNSHandle:   DTCCA-ARIN
Source:         ARIN


POCHandle:      DTCCA-ARIN
IsRole:         Y
LastName:       DTCC Abuse
FirstName:      
Street:         100 Campus Drive, Suite ETB722
City:           Dover
State/Prov:     DE
Country:        US
PostalCode:     19901
RegDate:        2023-06-24
Updated:        2025-06-24
OfficePhone:    +1-302-857-1700
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      HENNE71-ARIN
IsRole:         N
LastName:       Hennessy
FirstName:      Patrick
Street:         100 Campus Drive, Suite ETB722
City:           Dover
State/Prov:     DE
Country:        US
PostalCode:     19901
RegDate:        2023-01-24
Updated:        2025-02-04
OfficePhone:    +1-302-857-1757
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      CDC15-ARIN
IsRole:         N
LastName:       Cox
FirstName:      Craig
Street:         100 Campus Drive
City:           Dover
State/Prov:     DE
Country:        US
PostalCode:     19904
RegDate:        2022-12-02
Updated:        2025-06-24
OfficePhone:    +1-302-857-1749
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 138.0.0.0/8

Range ASN Company Num of IPs
138.131.0.0/16 AS559 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Developpement 65,536
138.78.0.0/16 AS396087 St. Mary's College of Maryland 65,536
138.110.0.0/16 AS396128 Mount Holyoke College 65,536
138.210.0.0/16 AS29817 CenturyLink Communications, LLC 65,536
138.81.0.0/16 AS3303 ISO Central Secretariat 65,536
138.66.0.0/16 AS20981 Prov. Casamassima Km.3 65,536
138.67.0.0/16 AS36704 Colorado School of Mines 65,536
138.190.0.0/16 AS3303 Berne, Switzerland 65,536
138.64.0.0/16 AS4685 ASAHI Net,Inc. 65,536
138.254.0.0/16 AS243 L3Harris Technologies, Inc. 65,536
138.231.0.0/16 AS2269 Ecole Normale Superieure Paris-Saclay EPSCP 65,536
138.210.0.0/16 AS2379 CenturyLink Communications, LLC 65,536
138.243.0.0/16 AS23779 NTT Communications Corporation 65,536
138.132.0.0/16 AS20746 Italtel SPA 65,536
138.106.0.0/16 AS202116 SCANIA CV AB 65,536
138.15.0.0/16 AS10753 NEC Laboratories America, Inc. 65,536
138.223.0.0/16 AS3303 65,536
138.201.0.0/16 AS24940 Server Block 65,536
138.62.0.0/16 AS25400 Norwegian State Railways 65,536
138.49.0.0/16 AS3128 University of Wisconsin-La Crosse 65,536
138.240.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.192.0.0/16 AS21727 Hamline University 65,536
138.195.0.0/16 AS2200 CENTRALESUPELEC 65,536
138.210.0.0/16 AS22561 CenturyLink Communications, LLC 65,536
138.210.0.0/16 AS22186 CenturyLink Communications, LLC 65,536
138.220.0.0/16 AS10497 IBRD 65,536
138.70.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.52.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.247.0.0/16 AS23122 Dakota State University 65,536
138.210.0.0/16 AS11398 CenturyLink Communications, LLC 65,536
138.34.0.0/16 AS16509 Amazon.com, Inc. 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
138.210.0.0/16 AS14921 CenturyLink Communications, LLC 65,536
138.92.0.0/16 AS11482 Canisius College 65,536
138.86.0.0/16 AS15295 University of Northern Colorado 65,536
138.27.0.0/16 AS1540 Headquarters, USAISC 65,536
138.225.0.0/16 AS20868 ABB Information Systems Ltd 65,536
138.107.0.0/16 AS2497 OLYMPUS CORPORATION 65,536
138.101.0.0/16 AS16509 Nikkei Inc. 65,536
138.111.0.0/16 AS16509 Amazon Technologies Inc. 65,536
138.41.0.0/16 AS137 DIR-GARR - Roma 65,536
138.232.0.0/16 AS1110 University of Innsbruck 65,536
138.90.0.0/16 AS16509 Amazon.com, Inc. 65,536
138.102.0.0/16 AS2200 INRAE 65,536
138.119.0.0/16 AS611 University of New Brunswick 65,536

Hosted domains

There are 3 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
138.123.240.163 delawaretech.com 2
138.123.194.86 xn--2o2bo9m9oan2pcqc7xz.net 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.
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Read more

Pingable IPs

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

IP Address ASN Details
138.123.9.66 AS46887 Crown Castle Fiber LLC 6.24ms from Newark, US
138.123.96.240 AS46887 Crown Castle Fiber LLC 7.66ms from Newark, US
138.123.60.240 AS46887 Crown Castle Fiber LLC 7.22ms from Newark, US
138.123.8.129 AS46887 Crown Castle Fiber LLC 6.26ms from Newark, US
138.123.130.184 AS46887 Crown Castle Fiber LLC 6.41ms from Newark, US
138.123.240.165 AS46887 Crown Castle Fiber LLC 6.42ms from Newark, US
138.123.172.240 AS46887 Crown Castle Fiber LLC 7.39ms from Newark, US
138.123.0.22 AS46887 Crown Castle Fiber LLC 6.29ms from Newark, US
138.123.2.37 AS46887 Crown Castle Fiber LLC 6.27ms from Newark, 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
46.177.175.144 AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA 5.26ms from Athens, GR
23.96.231.192 AS8075 Microsoft Corporation 0.24ms from Chicago, US
194.180.1.112 AS3278 SEW-EURODRIVE GmbH & Co KG 2.65ms from Frankfurt am Main, DE
83.56.225.208 AS3352 TELEFONICA DE ESPANA S.A.U. 1.32ms from Madrid, ES
191.243.129.224 AS271026 DANILO ANOENA DA COSTA MENINO EIRELI 13.95ms from Osasco, BR
86.223.123.160 AS3215 Orange S.A. 5.95ms from Paris, FR
27.209.19.32 AS4837 CHINA UNICOM China169 Backbone 6.59ms from Qingdao, CN
60.216.187.144 AS4837 CHINA UNICOM China169 Backbone 5.88ms from Qingdao, CN
18.213.69.32 AS14618 Amazon.com, Inc. 0.24ms from Reston, US
150.145.6.96 AS137 Consortium GARR 7.01ms from Rome, IT
154.223.199.16 AS49505 JSC Selectel 1.06ms from Saint Petersburg, RU
152.174.65.16 AS7418 TELEFÓNICA CHILE S.A. 9.19ms from Santiago, CL
24.143.85.160 AS11404 Wave Broadband 8.88ms from Seattle, US
175.253.208.96 AS4766 Korea Telecom 1.75ms from Seoul, KR
190.174.9.144 AS22927 Telefonica de Argentina 1.72ms from Buenos Aires, AR
82.103.136.16 AS30736 Asergo Holding ApS 0.37ms from Copenhagen, DK
87.174.139.112 AS3320 Deutsche Telekom AG 3.73ms from Duesseldorf, DE
81.159.86.16 AS2856 British Telecommunications PLC 7.01ms from London, GB
73.41.50.208 AS7922 Comcast Cable Communications, LLC 10.12ms from Los Angeles, US
176.165.91.0 AS5410 Bouygues Telecom SA 4.25ms from Marseille, FR
220.132.72.48 AS3462 Data Communication Business Group 0.72ms from Taipei, TW
184.56.113.64 AS10796 Charter Communications Inc 13.72ms from Toronto, CA
71.192.5.224 AS7922 Comcast Cable Communications, LLC 9.62ms from Boston, US
109.136.67.160 AS5432 Proximus NV 1.14ms from Brussels, BE
123.189.206.144 AS4837 CHINA UNICOM China169 Backbone 5.33ms from Liaoyang, CN

Traceroute

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

$
traceroute -a -n -q1 -f4 -m15 138.123.87.96
traceroute to 138.123.87.96 (138.123.87.96): 15 hops max, 52 byte packets
4 [AS7018] 32.130.25.14 8.338 ms
5 *
6 *
7 *
8 *
9 [AS1299] 62.115.8.255 9.667 ms
11 [AS46887] 144.121.35.98 16.648 ms
12 [AS46887] 144.121.35.72 16.538 ms
13 *
14 *
15 *
Measurement taken from IPinfo ProbeNet in Durham, 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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