ASN AS12257 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS12257?

AS12257 is listed under Dell, Inc..

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.

AS12257 Dell, Inc. | IPGeolocation.io

ASN Lookup Tool

Dell, Inc. dell.com

US 72 Routes

AS Data

AS12257

AS12257 – Dell, Inc.

AS Number	12257
AS Name	EMC-AS12257
Organization	Dell, Inc.(dcc-25)
Country	US
Website	dell.com
Number of IPv4 Routes	67
Number of IPv6 Routes	5
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1999-05-03

ASN Intelligence API for production workflows

Use ASN data for AS12257 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
128.221.208.0/24	AS12257	Dell, Inc.	Dell, Inc.	256
2607:f2b1:71::/48	AS12257	Dell, Inc.	Dell, Inc.	~1×10²⁴
147.178.7.0/24	AS12257	Dell, Inc.	Dell, Inc.	256
128.221.224.0/24	AS12257	Dell, Inc.	Dell, Inc.	256
198.161.247.0/24	AS12257	Dell, Inc.	Outseer LLC	256
147.178.2.0/24	AS12257	Dell, Inc.	Dell, Inc.	256
152.62.109.0/24	AS12257	Dell, Inc.	Dell, Inc.	256
152.62.97.0/24	AS12257	Dell, Inc.	Dell, Inc.	256
128.221.217.0/24	AS12257	Dell, Inc.	Dell, Inc.	256
152.62.185.0/24	AS12257	Dell, Inc.	Dell, Inc.	256

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:       12257
ASName:         EMC-AS12257
ASHandle:       AS12257
RegDate:        1999-05-03
Updated:        2023-03-20    
Ref:            https://rdap.arin.net/registry/autnum/12257


OrgName:        Dell, Inc.
OrgId:          DCC-25
Address:        One Dell Way
City:           Round Rock
StateProv:      TX
PostalCode:     78682
Country:        US
RegDate:        1990-09-26
Updated:        2024-11-25
Ref:            https://rdap.arin.net/registry/entity/DCC-25


OrgNOCHandle: OPERA394-ARIN
OrgNOCName:   Operations Center
OrgNOCPhone:  +1-866-434-8368 
OrgNOCEmail:  ipregistrars.abuse@dell.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/OPERA394-ARIN

OrgTechHandle: ANDER430-ARIN
OrgTechName:   Anderson, Colm 
OrgTechPhone:  +0035312795000 
OrgTechEmail:  colm_anderson@dell.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ANDER430-ARIN

OrgDNSHandle: PRESS58-ARIN
OrgDNSName:   Pressley, James 
OrgDNSPhone:  +1-214-326-9581 
OrgDNSEmail:  james.pressley@dell.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/PRESS58-ARIN

OrgTechHandle: PRESS58-ARIN
OrgTechName:   Pressley, James 
OrgTechPhone:  +1-214-326-9581 
OrgTechEmail:  james.pressley@dell.com
OrgTechRef:    https://rdap.arin.net/registry/entity/PRESS58-ARIN

OrgAbuseHandle: OPERA394-ARIN
OrgAbuseName:   Operations Center
OrgAbusePhone:  +1-866-434-8368 
OrgAbuseEmail:  ipregistrars.abuse@dell.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/OPERA394-ARIN

OrgDNSHandle: ANDER430-ARIN
OrgDNSName:   Anderson, Colm 
OrgDNSPhone:  +0035312795000 
OrgDNSEmail:  colm_anderson@dell.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/ANDER430-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

Peers

AS Number	Description	Country
AS2686	AT&T Enterprises, LLC	US
AS12400	Partner Communications Ltd.	IL
AS198949	Radware Ltd	IL
AS7018	AT&T Enterprises, LLC	US
AS8220	COLT Technology Services Group Limited	GB
AS9498	Bharti Airtel Limited	IN
AS3549	Level 3 Communications, Inc. (GBLX)	US
AS1273	Vodafone Group PLC	GB
AS701	Verizon Business/UUnet	US
AS7473	Singapore Telecommunications SINGTEL Internet Exchange	SG

Upstreams

AS Number	Description	Country
AS2686	AT&T Enterprises, LLC	US
AS12400	Partner Communications Ltd.	IL
AS198949	Radware Ltd	IL
AS7018	AT&T Enterprises, LLC	US
AS8220	COLT Technology Services Group Limited	GB
AS9498	Bharti Airtel Limited	IN
AS7473	Singapore Telecommunications SINGTEL Internet Exchange	SG
AS1273	Vodafone Group PLC	NL
AS12849	Hot Net internet services Ltd.	IL
AS4657	Starhub Ltd.	SG