ASN AS10370 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS10370?

AS10370 is listed under Northwest Airlines.

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.

AS10370 Northwest Airlines | IPGeolocation.io

ASN Lookup Tool

Northwest Airlines delta.com

US 5 Routes

AS Data

AS10370

AS10370 – Northwest Airlines

AS Number	10370
AS Name	NORTHWEST-AIRLINES
Organization	Northwest Airlines(northw-49)
Country	US
Website	delta.com
Number of IPv4 Routes	5
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1997-07-14

ASN Intelligence API for production workflows

Use ASN data for AS10370 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
139.72.0.0/16	AS10370	Northwest Airlines	Northwest Airlines, Inc.	65536
139.72.32.0/24	AS10370	Northwest Airlines	Northwest Airlines, Inc.	256
139.72.57.0/24	AS10370	Northwest Airlines	Northwest Airlines, Inc.	256
139.72.47.0/24	AS10370	Northwest Airlines	Northwest Airlines, Inc.	256
147.118.0.0/16	AS10370	Northwest Airlines	Northwest Aerospace Training Corporation	65536

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:       10370
ASName:         NORTHWEST-AIRLINES
ASHandle:       AS10370
RegDate:        1997-07-14
Updated:        1997-07-14    
Ref:            https://rdap.arin.net/registry/autnum/10370


OrgName:        Northwest Airlines
OrgId:          NORTHW-49
Address:        1500 Towerview Rd
City:           Eagan
StateProv:      MN
PostalCode:     55121
Country:        US
RegDate:        1997-07-14
Updated:        2023-01-20
Ref:            https://rdap.arin.net/registry/entity/NORTHW-49


OrgTechHandle: RLS134-ARIN
OrgTechName:   Silver, Richard L
OrgTechPhone:  +1-404-715-3629 
OrgTechEmail:  richard.silver@delta.com
OrgTechRef:    https://rdap.arin.net/registry/entity/RLS134-ARIN

OrgTechHandle: KEELI35-ARIN
OrgTechName:   Keeling, James 
OrgTechPhone:  +1-612-817-5800 
OrgTechEmail:  james.keeling@delta.com
OrgTechRef:    https://rdap.arin.net/registry/entity/KEELI35-ARIN

OrgTechHandle: DA19-ORG-ARIN
OrgTechName:   DNS Administrator
OrgTechPhone:  +1-404-773-9999 
OrgTechEmail:  hostmaster@delta.com
OrgTechRef:    https://rdap.arin.net/registry/entity/DA19-ORG-ARIN

OrgAbuseHandle: DA19-ORG-ARIN
OrgAbuseName:   DNS Administrator
OrgAbusePhone:  +1-404-773-9999 
OrgAbuseEmail:  hostmaster@delta.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/DA19-ORG-ARIN

RTechHandle: JK2867-ARIN
RTechName:   Kelly, Joseph 
RTechPhone:  +1-612-266-3043 
RTechEmail:  joe.kelly@delta.com
RTechRef:    https://rdap.arin.net/registry/entity/JK2867-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
AS26034	Delta Technology	US
AS209	CenturyLink Communications, LLC	US

Upstreams

AS Number	Description	Country
AS26034	Delta Technology	US
AS209	CenturyLink Communications, LLC	US