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.

AS398851 American Express Company

Q: Why is WHOIS data shown for an ASN?

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

ASN Lookup Tool

Search ASN

AS Data

IP Routes

Raw Whois

Parsed Whois

Peers

Upstreams

Downstreams

Legacy Routes

American Express Company aexp.com

US 0 Routes

AS Data

AS398851

AS398851 – American Express Company

AS Number	398851
AS Name	AMEX-TRAN-ASH
Organization	American Express Company(americ)
Country	US
Website	aexp.com
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2022-11-10

ASN Intelligence API for production workflows

Use ASN data for AS398851 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

Get ASN API Key ASN API Docs

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:       398851
ASName:         AMEX-TRAN-ASH
ASHandle:       AS398851
RegDate:        2022-11-10
Updated:        2022-11-10    
Ref:            https://rdap.arin.net/registry/autnum/398851


OrgName:        American Express Company
OrgId:          AMERIC
Address:        19640 N. 31st Ave.
City:           Phoenix
StateProv:      AZ
PostalCode:     85027
Country:        US
RegDate:        1989-11-06
Updated:        2022-04-20
Ref:            https://rdap.arin.net/registry/entity/AMERIC


OrgTechHandle: LDA92-ARIN
OrgTechName:   Alfaro, Luis  Diego
OrgTechPhone:  +1-602-766-4746 
OrgTechEmail:  luis.d.alfaro@aexp.com
OrgTechRef:    https://rdap.arin.net/registry/entity/LDA92-ARIN

OrgAbuseHandle: AESOC-ARIN
OrgAbuseName:   American Express Security Operations Center
OrgAbusePhone:  +1-602-766-1095 
OrgAbuseEmail:  soc@aexp.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/AESOC-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

Frequently Asked Questions

What is ASN AS398851?

ASN AS398851 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS398851?

AS398851 is listed under American Express Company.

What do peers, upstreams, and downstreams mean?

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 included here?

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

How can I access full ASN table data?

This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.