ASN AS63391 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS63391?

AS63391 is listed under MailChimp.

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.

AS63391 MailChimp | IPGeolocation.io

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MailChimp mailchimp.com

US 0 Routes

AS Data

AS63391

AS63391 – MailChimp

AS Number	63391
AS Name	RSG
Organization	MailChimp(intui-77)
Country	US
Website	mailchimp.com
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2015-02-05

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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:       63391
ASName:         RSG
ASHandle:       AS63391
RegDate:        2015-02-05
Updated:        2024-01-11    
Ref:            https://rdap.arin.net/registry/autnum/63391


OrgName:        MailChimp
OrgId:          INTUI-77
Address:        2535 Garcia Avenue
City:           Mountain View
StateProv:      CA
PostalCode:     94043
Country:        US
RegDate:        2022-10-19
Updated:        2023-08-01
Ref:            https://rdap.arin.net/registry/entity/INTUI-77


OrgNOCHandle: NETWO8422-ARIN
OrgNOCName:   Network
OrgNOCPhone:  +1-678-999-0141 
OrgNOCEmail:  networkmaintenance+arin@mailchimp.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NETWO8422-ARIN

OrgDNSHandle: MAILC1-ARIN
OrgDNSName:   MailChimp
OrgDNSPhone:  +1-650-944-6000 
OrgDNSEmail:  nadmin@intuit.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/MAILC1-ARIN

OrgNOCHandle: MAILC1-ARIN
OrgNOCName:   MailChimp
OrgNOCPhone:  +1-650-944-6000 
OrgNOCEmail:  nadmin@intuit.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/MAILC1-ARIN

OrgTechHandle: NETWO8422-ARIN
OrgTechName:   Network
OrgTechPhone:  +1-678-999-0141 
OrgTechEmail:  networkmaintenance+arin@mailchimp.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO8422-ARIN

OrgAbuseHandle: MAILC1-ARIN
OrgAbuseName:   MailChimp
OrgAbusePhone:  +1-650-944-6000 
OrgAbuseEmail:  nadmin@intuit.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/MAILC1-ARIN

OrgRoutingHandle: MAILC1-ARIN
OrgRoutingName:   MailChimp
OrgRoutingPhone:  +1-650-944-6000 
OrgRoutingEmail:  nadmin@intuit.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/MAILC1-ARIN

OrgRoutingHandle: NETWO8422-ARIN
OrgRoutingName:   Network
OrgRoutingPhone:  +1-678-999-0141 
OrgRoutingEmail:  networkmaintenance+arin@mailchimp.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/NETWO8422-ARIN

OrgTechHandle: MAILC1-ARIN
OrgTechName:   MailChimp
OrgTechPhone:  +1-650-944-6000 
OrgTechEmail:  nadmin@intuit.com
OrgTechRef:    https://rdap.arin.net/registry/entity/MAILC1-ARIN

OrgAbuseHandle: ABUSE3411-ARIN
OrgAbuseName:   Abuse
OrgAbusePhone:  +1-678-999-0141 
OrgAbuseEmail:  abuse@mailchimp.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE3411-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.
#