ASN AS15211 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS15211?

AS15211 is listed under Square, 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.

AS15211 Square, Inc. | IPGeolocation.io

ASN Lookup Tool

Square, Inc. squareup.com

US 16 Routes

AS Data

AS15211

AS15211 – Square, Inc.

AS Number	15211
AS Name	SQUARE
Organization	Square, Inc. (squar-27)
Country	US
Website	squareup.com
Number of IPv4 Routes	13
Number of IPv6 Routes	3
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2009-12-22

ASN Intelligence API for production workflows

Use ASN data for AS15211 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
74.122.189.0/24	AS15211	Square, Inc.	Square, Inc.	256
2620:30::/44	AS15211	Square, Inc.	Square, Inc.	~19×10²⁴
185.57.58.0/23	AS15211	Square, Inc.	Block Inc	512
103.31.216.0/24	AS15211	Square, Inc.	Square Inc	256
74.122.184.0/21	AS15211	Square, Inc.	Square, Inc.	2048
74.122.190.0/24	AS15211	Square, Inc.	Square, Inc.	256
185.57.56.0/24	AS15211	Square, Inc.	Block Inc	256
74.122.191.0/24	AS15211	Square, Inc.	Square, Inc.	256
103.31.219.0/24	AS15211	Square, Inc.	Square Inc	256
74.122.188.0/24	AS15211	Square, Inc.	Square, 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:       15211
ASName:         SQUARE
ASHandle:       AS15211
RegDate:        2009-12-22
Updated:        2012-03-02
Ref:            https://rdap.arin.net/registry/autnum/15211


OrgName:        Square, Inc.
OrgId:          SQUAR-27
Address:        1455 Market St.
Address:        Suite 600
City:           San Francisco
StateProv:      CA
PostalCode:     94103
Country:        US
RegDate:        2009-12-11
Updated:        2014-08-06
Ref:            https://rdap.arin.net/registry/entity/SQUAR-27


OrgAbuseHandle: SQUAR1-ARIN
OrgAbuseName:   Square Ops
OrgAbusePhone:  +1-415-375-3176 
OrgAbuseEmail:  noc+arin@squareup.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/SQUAR1-ARIN

OrgTechHandle: SQUAR1-ARIN
OrgTechName:   Square Ops
OrgTechPhone:  +1-415-375-3176 
OrgTechEmail:  noc+arin@squareup.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SQUAR1-ARIN

RTechHandle: SQUAR1-ARIN
RTechName:   Square Ops
RTechPhone:  +1-415-375-3176 
RTechEmail:  noc+arin@squareup.com
RTechRef:    https://rdap.arin.net/registry/entity/SQUAR1-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" : "15211",
    "as_handle" : "AS15211",
    "as_name" : "SQUARE",
    "tech_contacts" : [ "SQUAR1-ARIN", "SQUAR1-ARIN" ],
    "abuse_contacts" : [ "SQUAR1-ARIN" ],
    "date_created" : "2009-12-22",
    "date_updated" : "2012-03-02",
    "source" : "https://rdap.arin.net/registry/autnum/15211"
  } ],
  "organization" : {
    "handle" : "SQUAR-27",
    "name" : "Square, Inc.",
    "address" : [ "1455 Market St.", "Suite 600", "San Francisco", "CA", "94103", "US" ],
    "street" : "Market St.",
    "city" : "San Francisco",
    "state" : "CA",
    "zip_code" : "94103",
    "country" : [ "US" ],
    "date_created" : "2009-12-11",
    "date_updated" : "2014-08-06",
    "source" : "https://rdap.arin.net/registry/entity/SQUAR-27",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "SQUAR1-ARIN",
    "name" : "Square Ops",
    "email" : [ "noc+arin@squareup.com" ],
    "phone" : [ "+1-415-375-3176" ],
    "source" : "https://rdap.arin.net/registry/entity/SQUAR1-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "SQUAR1-ARIN",
    "name" : "Square Ops",
    "email" : [ "noc+arin@squareup.com" ],
    "phone" : [ "+1-415-375-3176" ],
    "source" : "https://rdap.arin.net/registry/entity/SQUAR1-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS1299	Arelion Sweden AB	SE
AS2914	NTT America, Inc.	US
AS394628	Square, Inc.	US

Upstreams

AS Number	Description	Country
AS1299	Arelion Sweden AB	SE
AS2914	NTT America, Inc.	US

Downstreams

AS Number	Description	Country
AS394628	Square, Inc.	US