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
AS266643 NETFY TELECOMUNICACOES
AS266674 Cooperativa Eléctrica de Las Perdices Ltda.
AS266893 MULTIMEDIA NETWORK, S.A. DE C.V.
AS271529 ONLINE TELECOM.IP LTDA ME
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
AS266643 NETFY TELECOMUNICACOES
AS266674 Cooperativa Eléctrica de Las Perdices Ltda.
AS266893 MULTIMEDIA NETWORK, S.A. DE C.V.
AS271529 ONLINE TELECOM.IP LTDA ME
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
91.143.144.57 AS2 University of Delaware 20.61ms from Moscow, RU
128.4.33.254 AS2 University of Delaware 4.38ms from Reston, US
91.143.147.90 AS2 University of Delaware 22.76ms from Moscow, RU
128.4.23.175 AS2 University of Delaware 4.63ms from Reston, US
128.4.10.227 AS2 University of Delaware 4.61ms from Reston, US
91.143.157.153 AS2 University of Delaware 20.86ms from Moscow, RU
91.143.158.37 AS2 University of Delaware 20.06ms from Moscow, RU
91.143.150.125 AS2 University of Delaware 22.04ms from Moscow, RU
91.143.146.191 AS2 University of Delaware 22.01ms from Moscow, RU
91.143.151.3 AS2 University of Delaware 21.19ms from Moscow, RU
128.4.21.110 AS2 University of Delaware 4.53ms from Reston, US
91.143.149.248 AS2 University of Delaware 22.76ms from Moscow, RU
128.4.30.138 AS2 University of Delaware 4.49ms from Reston, US
128.4.41.1 AS2 University of Delaware 4.72ms from Reston, US
128.4.5.169 AS2 University of Delaware 4.58ms from Reston, US
91.143.156.33 AS2 University of Delaware 20.10ms from Moscow, RU
91.143.155.1 AS2 University of Delaware 26.34ms from Moscow, RU
91.143.159.253 AS2 University of Delaware 21.88ms from Moscow, RU
91.143.148.29 AS2 University of Delaware 20.37ms from Moscow, RU
128.4.31.83 AS2 University of Delaware 4.70ms 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
62.221.192.2 AS48635 Your Hosting B.V. 0.41ms from Amsterdam, NL
73.207.184.178 AS7922 Comcast Cable Communications, LLC 5.47ms from Atlanta, US
222.153.82.50 AS4771 Spark New Zealand Trading Ltd. 3.21ms from Auckland, NZ
189.176.241.146 AS8151 UNINET 12.55ms from Cancún, MX
68.45.157.2 AS7922 Comcast Cable Communications, LLC 11.62ms from Chicago, US
90.187.177.18 AS3209 Vodafone GmbH 1.02ms from Hamburg, DE
18.133.249.82 AS16509 Amazon.com, Inc. 0.50ms from London, GB
172.166.155.194 AS8075 Microsoft Corporation 0.22ms from London, GB
169.232.24.2 AS52 University of California, Los Angeles 0.69ms from Los Angeles, US
90.252.21.114 AS5378 Vodafone Limited 12.76ms from Manchester, GB
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
190.12.48.242 AS22724 PUNTONET S.A. 8.64ms from Quito, EC
98.202.135.2 AS7922 Comcast Cable Communications, LLC 10.40ms from Salt Lake City, US
92.49.175.66 AS12389 PJSC Rostelecom 14.68ms from Samara, RU
50.213.39.50 AS7922 Comcast Cable Communications, LLC 6.03ms from Santa Clara, US
17.142.161.2 AS714 Apple Inc. 7.40ms from Seattle, US
125.159.30.98 AS4766 Korea Telecom 2.30ms from Seoul, KR
211.192.252.2 AS4766 Korea Telecom 5.57ms from Seoul, KR
211.206.27.98 AS9318 SK Broadband Co Ltd 2.56ms from Seoul, KR
119.9.162.2 AS58683 Rackspace.com Sydney 0.85ms from Sydney, AU
139.60.136.2 AS396052 North Alabama Electric Cooperative 7.61ms from Atlanta, US
34.219.126.18 AS16509 Amazon.com, Inc. 0.16ms from Boardman, US
52.251.59.130 AS8075 Microsoft Corporation 0.17ms from Boydton, US
65.31.36.130 AS10796 Charter Communications Inc 6.17ms from Columbus, US
90.184.241.242 AS203953 Hiper A/S 1.42ms from Copenhagen, DK

Traceroute

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

$
traceroute -a -n -q1 -f2 -m6 128.4.127.221
traceroute to 128.4.127.221 (128.4.127.221): 6 hops max, 52 byte packets
2 [AS37684] 41.242.0.246 0.286 ms
3 [AS37100] 105.21.42.57 0.576 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Nairobi, KE
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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