ASN AS2 is an Autonomous System Number used to identify a network for BGP internet routing.

AS2 is listed under University of Delaware.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS2 University of Delaware | IPGeolocation.io

ASN Lookup Tool

University of Delaware udel.edu

US 8 Routes

AS Data

AS2

AS2 – University of Delaware

AS Number	2
AS Name	UDEL-DCN
Organization	University of Delaware (univer-19-z)
Country	US
Website	udel.edu
Number of IPv4 Routes	7
Number of IPv6 Routes	1
ASN type	EDUCATION
Registry	ARIN
Date Allocated	1991-01-10

ASN Intelligence API for production workflows

Use ASN data for AS2 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
171.79.128.0/20	AS2	University of Delaware	Bharti Airtel Limited	4096
45.228.75.0/24	AS2	University of Delaware	Cooperativa Eléctrica de Las Perdices Ltda.	256
91.143.144.0/20	AS2	University of Delaware	South telephone company LLC	4096
45.228.74.0/24	AS2	University of Delaware	Cooperativa Eléctrica de Las Perdices Ltda.	256
128.4.0.0/16	AS2	University of Delaware	University of Delaware	65536
45.161.25.0/24	AS2	University of Delaware	MULTIMEDIA NETWORK, S.A. DE C.V.	256
2804:3edc::/32	AS2	University of Delaware	WCA TELECOM	~79×10²⁷
171.79.144.0/20	AS2	University of Delaware	Bharti Airtel Limited	4096

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       2
ASName:         UDEL-DCN
ASHandle:       AS2
RegDate:        1991-01-10
Updated:        2023-11-08
Ref:            https://rdap.arin.net/registry/autnum/2


OrgName:        University of Delaware
OrgId:          UNIVER-19-Z
Address:        Information Technologies
Address:        192 South Chapel Street
City:           Newark
StateProv:      DE
PostalCode:     19716
Country:        US
RegDate:        2008-03-18
Updated:        2024-08-15
Ref:            https://rdap.arin.net/registry/entity/UNIVER-19-Z


OrgNOCHandle: UDELN-ARIN
OrgNOCName:   UDel NOC
OrgNOCPhone:  +1-302-831-6000 
OrgNOCEmail:  noc@udel.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/UDELN-ARIN

OrgTechHandle: NSS13-ARIN
OrgTechName:   Network and Systems Services
OrgTechPhone:  +1-302-831-6000 
OrgTechEmail:  noc@udel.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/NSS13-ARIN

OrgDNSHandle: UDELN-ARIN
OrgDNSName:   UDel NOC
OrgDNSPhone:  +1-302-831-6000 
OrgDNSEmail:  noc@udel.edu
OrgDNSRef:    https://rdap.arin.net/registry/entity/UDELN-ARIN

OrgRoutingHandle: NSS13-ARIN
OrgRoutingName:   Network and Systems Services
OrgRoutingPhone:  +1-302-831-6000 
OrgRoutingEmail:  noc@udel.edu
OrgRoutingRef:    https://rdap.arin.net/registry/entity/NSS13-ARIN

OrgAbuseHandle: UDELN-ARIN
OrgAbuseName:   UDel NOC
OrgAbusePhone:  +1-302-831-6000 
OrgAbuseEmail:  noc@udel.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/UDELN-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "2",
    "as_handle" : "AS2",
    "as_name" : "UDEL-DCN",
    "admin_contacts" : [ "UDELN-ARIN" ],
    "tech_contacts" : [ "NSS13-ARIN", "NSS13-ARIN" ],
    "abuse_contacts" : [ "UDELN-ARIN" ],
    "date_created" : "1991-01-10",
    "date_updated" : "2023-11-08",
    "source" : "https://rdap.arin.net/registry/autnum/2"
  } ],
  "organization" : {
    "handle" : "UNIVER-19-Z",
    "name" : "University of Delaware",
    "address" : [ "Information Technologies", "192 South Chapel Street", "Newark", "DE", "19716", "US" ],
    "street" : "South Chapel Street",
    "city" : "Newark",
    "state" : "DE",
    "zip_code" : "19716",
    "country" : [ "US" ],
    "date_created" : "2008-03-18",
    "date_updated" : "2024-08-15",
    "source" : "https://rdap.arin.net/registry/entity/UNIVER-19-Z",
    "addressCountry" : "US"
  },
  "administrative_contacts" : [ {
    "handle" : "UDELN-ARIN",
    "name" : "UDel NOC",
    "email" : [ "noc@udel.edu" ],
    "phone" : [ "+1-302-831-6000" ],
    "source" : "https://rdap.arin.net/registry/entity/UDELN-ARIN"
  } ],
  "technical_contacts" : [ {
    "handle" : "NSS13-ARIN",
    "name" : "Network and Systems Services",
    "email" : [ "noc@udel.edu" ],
    "phone" : [ "+1-302-831-6000" ],
    "source" : "https://rdap.arin.net/registry/entity/NSS13-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "UDELN-ARIN",
    "name" : "UDel NOC",
    "email" : [ "noc@udel.edu" ],
    "phone" : [ "+1-302-831-6000" ],
    "source" : "https://rdap.arin.net/registry/entity/UDELN-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS41837	"South telephone company" LLC	RU
AS37254	Green Flash Trading	ZA
AS203794	LLC Gals-Telecom	RU
AS45609	Bharti Airtel Limited	IN
AS199268	LANCOM inzeniring racunalniskig sistemov d.o.o.	SI
AS141975	PT Rubyan Network Solution	ID
AS139951	PT Alfatih Indo Teknologi	ID
AS266674	Cooperativa Eléctrica de Las Perdices Ltda.	AR
AS29091	IPNXng	ZZ
AS41837	South Telephony Company LTD	RU

Upstreams

AS Number	Description	Country
AS45609	Bharti Airtel Limited	IN
AS199268	LANCOM inzeniring racunalniskig sistemov d.o.o.	SI
AS141975	PT Rubyan Network Solution	ID
AS266674	Cooperativa Eléctrica de Las Perdices Ltda.	AR
AS41837	South Telephony Company LTD	RU
AS266625	WCA TELECOM	BR
AS24213	PT. Arsen Kusuma Indonesia	ID
AS37613	DOLPHIN TELECOMMUNICATION LIMITED	GH
AS34	University of Delaware	US
AS266893	MULTIMEDIA NETWORK, S.A. DE C.V.	SV

Downstreams

AS Number	Description	Country
AS29091	IPNXng	ZZ
AS4622	Indonesia Network Information Center	ID
AS63515	Indonesia Network Information Center	ID
AS152057	PT Dinoki Wayae Yoshe	ID

Legacy Routes

194.190.54.0/24 2001:67c:1328::/48 189.76.77.0/24 129.205.64.0/20 103.167.70.0/23 154.65.12.0/22 194.190.53.0/24