Autonomous System details

AS2

University of Delaware  ·  udel.edu

United States

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AS2 – University of Delaware

Field Value
Country United States
Website udel.edu
Hosted domains 16
IPv4 addresses 69,632
IPv6 addresses 0
ASN type Education
Registry arin
Allocated 35 years ago on Jan 10, 1991
Updated 2 years ago on Nov 08, 2023

IP Ranges

Netblock Company Num of IPs
128.4.0.0/16 University of Delaware 65,536
91.143.144.0/20 South telephone company LLC 4,096

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS2
                                                OrgID:          AS2
                                                ASName:         AS2
                                                ASNumber:       AS2
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 16 domain names hosted across 9 IP addresses on this ASN.

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IP Address Domain Domains on this IP
128.4.31.8 ██████████ 8
91.143.148.26 ████████ 1
128.4.31.86 ██████████ 1
128.4.20.226 ██████████ 1
128.4.31.222 ████████ 1
91.143.157.140 ████████ 1
91.143.148.178 ██████████ 1
91.143.148.250 █████████ 1
128.4.31.87 ██████████ 1

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Peers

There are 19 peers for this ASN.

Peers Name
AS136617 Fortune Telecom Company Limited
AS139928 Third Wave Technologies Ltd
AS199268 LANCOM inzeniring racunalniskig sistemov d.o.o.
AS203794 LLC Gals-Telecom
AS266625 WCA TELECOM
AS266674 Cooperativa Eléctrica de Las Perdices Ltda.
AS266893 MULTIMEDIA NETWORK, S.A. DE C.V.
AS271529 ONLINE TELECOM.IP LTDA ME
AS272783 NETWII TELECOM LTDA
AS29091 ipNX Nigeria Limited
AS34 University of Delaware
AS37254 Green Flash Trading
AS37280 Broad Based Communications Limited
AS37302 Dube TradePort
AS37613 DOLPHIN TELECOMMUNICATION LIMITED
AS37628 KAB Technologies
AS41837 "South telephone company" LLC
AS52752 Vegas Telecom Informática Ltda.
AS59362 KS Network Limited
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ASN API & Database

Upstreams

There are 9 upstreams for this ASN.

upstreams Name
AS203794 LLC Gals-Telecom
AS266625 WCA TELECOM
AS266674 Cooperativa Eléctrica de Las Perdices Ltda.
AS266893 MULTIMEDIA NETWORK, S.A. DE C.V.
AS271529 ONLINE TELECOM.IP LTDA ME
AS272783 NETWII TELECOM LTDA
AS34 University of Delaware
AS37302 Dube TradePort
AS41837 "South telephone company" LLC
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ASN API & Database

Downstreams

There is 1 peer for this ASN.

Downstreams Name
AS37280 Broad Based Communications Limited
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ASN API & Database

Pingable IPs

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

IP Address ASN Details
91.143.148.29 AS2 University of Delaware 20.37ms from Moscow, RU
91.143.158.37 AS2 University of Delaware 20.06ms from Moscow, RU
91.143.149.248 AS2 University of Delaware 22.76ms from Moscow, RU
91.143.150.125 AS2 University of Delaware 22.04ms from Moscow, RU
128.4.21.110 AS2 University of Delaware 4.53ms from Reston, US
128.4.41.1 AS2 University of Delaware 4.72ms from Reston, US
128.4.31.83 AS2 University of Delaware 4.70ms from Reston, US
91.143.146.191 AS2 University of Delaware 22.01ms from Moscow, RU
91.143.155.1 AS2 University of Delaware 26.34ms from Moscow, RU
91.143.144.57 AS2 University of Delaware 20.61ms from Moscow, RU
91.143.147.90 AS2 University of Delaware 22.76ms from Moscow, RU
128.4.10.227 AS2 University of Delaware 4.61ms from Reston, US
128.4.23.175 AS2 University of Delaware 4.63ms from Reston, US
91.143.156.33 AS2 University of Delaware 20.10ms from Moscow, RU
128.4.33.254 AS2 University of Delaware 4.38ms from Reston, US
91.143.151.3 AS2 University of Delaware 21.19ms from Moscow, RU
91.143.157.153 AS2 University of Delaware 20.86ms from Moscow, RU
128.4.30.138 AS2 University of Delaware 4.49ms from Reston, US
91.143.159.253 AS2 University of Delaware 21.88ms from Moscow, RU
128.4.5.169 AS2 University of Delaware 4.58ms from Reston, 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
165.125.185.2 AS16875 AON Corporation 0.76ms from Amsterdam, NL
67.32.36.162 AS6389 AT&T Enterprises, LLC 7.94ms from Atlanta, US
76.242.124.130 AS7018 AT&T Enterprises, LLC 15.00ms from Atlanta, US
200.223.204.50 AS7738 V tal 10.45ms from Fortaleza, BR
23.225.150.34 AS40065 CNSERVERS LLC 0.29ms from Los Angeles, US
205.193.204.50 AS11079 Zayo Bandwidth 5.36ms from Montreal, CA
157.139.68.178 AS20252 Joan and Sanford I. Weill Medical College and Graduate School of Medical Sciences of Cornell University 1.13ms from New York City, US
71.44.211.66 AS33363 Charter Communications, Inc 4.41ms from Orlando, US
59.128.100.50 AS2516 KDDI CORPORATION 1.61ms from Osaka, JP
177.104.66.130 AS28258 VERO S.A 9.06ms from Osasco, BR
91.190.84.2 AS31376 Smart Telecom Limited 0.91ms from Saint Petersburg, RU
178.72.144.98 AS49505 JSC Selectel 0.49ms from Saint Petersburg, RU
175.224.66.242 AS4766 Korea Telecom 1.47ms from Seoul, KR
14.90.2.226 AS4766 Korea Telecom 1.66ms from Seoul, KR
5.54.136.162 AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA 1.40ms from Athens, GR
109.132.10.146 AS5432 Proximus NV 2.07ms from Brussels, BE
139.201.211.226 AS4134 CHINANET-BACKBONE 10.36ms from Chengdu, CN
24.209.38.66 AS10796 Charter Communications Inc 11.95ms from Cleveland, US
89.160.86.2 AS29518 Bredband2 AB 7.84ms from Copenhagen, DK
193.111.11.2 AS24722 Babilon 0.25ms from Dushanbe, TJ
31.133.195.98 AS9009 M247 Europe SRL 0.27ms from Frankfurt am Main, DE
151.49.113.194 AS1267 WIND TRE S.P.A. 7.87ms from Milan, IT
38.96.16.242 AS174 Cogent Communications, LLC 0.68ms from New York City, US
108.188.194.242 AS33363 Charter Communications, Inc 6.60ms from Orlando, US
199.21.30.82 AS10962 Cerner Corporation 1.13ms from Philadelphia, US

Traceroute

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

$
traceroute -a -n -q1 -m5 128.4.46.237
traceroute to 128.4.46.237 (128.4.46.237): 5 hops max, 52 byte packets
3 *
4 *
5 *
Measurement taken from IPinfo ProbeNet in Asuncion, PY
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS2 at robtex.

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