ASN AS21534 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21534?

AS21534 is listed under BroadSoft, 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.

AS21534 BroadSoft, Inc. | IPGeolocation.io

ASN Lookup Tool

BroadSoft, Inc. broadsoft.com

US 37 Routes

AS Data

AS21534

AS21534 – BroadSoft, Inc.

AS Number	21534
AS Name	AS21534
Organization	BroadSoft, Inc. (broad138)
Country	US
Website	broadsoft.com
Number of IPv4 Routes	29
Number of IPv6 Routes	8
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2015-07-09

ASN Intelligence API for production workflows

Use ASN data for AS21534 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

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
128.177.14.0/24	AS21534	BroadSoft, Inc.	ADAPTION TECHNOLOGIES VENTURES,LTD	256
2a05:4200:1::/48	AS21534	BroadSoft, Inc.	Broadsoft LTD	~1×10²⁴
135.84.170.0/24	AS21534	BroadSoft, Inc.	BroadSoft, Inc.	256
2a05:4200:5::/48	AS21534	BroadSoft, Inc.	Broadsoft LTD	~1×10²⁴
135.84.174.0/24	AS21534	BroadSoft, Inc.	BroadSoft, Inc.	256
2a05:4200:b::/48	AS21534	BroadSoft, Inc.	Broadsoft LTD	~1×10²⁴
139.177.65.0/24	AS21534	BroadSoft, Inc.	Cisco Webex LLC	256
139.177.95.0/24	AS21534	BroadSoft, Inc.	Cisco Webex LLC	256
199.59.65.0/24	AS21534	BroadSoft, Inc.	BroadSoft, Inc.	256
139.177.78.0/24	AS21534	BroadSoft, Inc.	Cisco Webex LLC	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:       21534
ASName:         AS21534
ASHandle:       AS21534
RegDate:        2015-07-09
Updated:        2021-12-09
Ref:            https://rdap.arin.net/registry/autnum/21534


OrgName:        BroadSoft, Inc.
OrgId:          BROAD138
Address:        77 Upper Rock Cir
Address:        Suite 200
City:           Rockville
StateProv:      MD
PostalCode:     20850
Country:        US
RegDate:        2010-07-01
Updated:        2024-01-10
Comment:        http://www.broadsoft.com
Ref:            https://rdap.arin.net/registry/entity/BROAD138


OrgAbuseHandle: BIEHL25-ARIN
OrgAbuseName:   Biehl, Jeff 
OrgAbusePhone:  +1-408-321-4776 
OrgAbuseEmail:  jebiehl@cisco.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/BIEHL25-ARIN

OrgAbuseHandle: BIJ4-ARIN
OrgAbuseName:   Bolden II, James 
OrgAbusePhone:  +1-408-321-4699 
OrgAbuseEmail:  jbolden@broadsoft.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/BIJ4-ARIN

OrgTechHandle: BIEHL25-ARIN
OrgTechName:   Biehl, Jeff 
OrgTechPhone:  +1-408-321-4776 
OrgTechEmail:  jebiehl@cisco.com
OrgTechRef:    https://rdap.arin.net/registry/entity/BIEHL25-ARIN

OrgTechHandle: BIJ4-ARIN
OrgTechName:   Bolden II, James 
OrgTechPhone:  +1-408-321-4699 
OrgTechEmail:  jbolden@broadsoft.com
OrgTechRef:    https://rdap.arin.net/registry/entity/BIJ4-ARIN

OrgNOCHandle: BIEHL25-ARIN
OrgNOCName:   Biehl, Jeff 
OrgNOCPhone:  +1-408-321-4776 
OrgNOCEmail:  jebiehl@cisco.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/BIEHL25-ARIN

OrgTechHandle: PHILL324-ARIN
OrgTechName:   Phillips, Brian 
OrgTechPhone:  +1-936-320-8838 
OrgTechEmail:  briphill@cisco.com
OrgTechRef:    https://rdap.arin.net/registry/entity/PHILL324-ARIN

OrgDNSHandle: BIEHL25-ARIN
OrgDNSName:   Biehl, Jeff 
OrgDNSPhone:  +1-408-321-4776 
OrgDNSEmail:  jebiehl@cisco.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/BIEHL25-ARIN

OrgRoutingHandle: BIJ4-ARIN
OrgRoutingName:   Bolden II, James 
OrgRoutingPhone:  +1-408-321-4699 
OrgRoutingEmail:  jbolden@broadsoft.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/BIJ4-ARIN

OrgRoutingHandle: BIEHL25-ARIN
OrgRoutingName:   Biehl, Jeff 
OrgRoutingPhone:  +1-408-321-4776 
OrgRoutingEmail:  jebiehl@cisco.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/BIEHL25-ARIN

OrgDNSHandle: BIJ4-ARIN
OrgDNSName:   Bolden II, James 
OrgDNSPhone:  +1-408-321-4699 
OrgDNSEmail:  jbolden@broadsoft.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/BIJ4-ARIN

OrgNOCHandle: BIJ4-ARIN
OrgNOCName:   Bolden II, James 
OrgNOCPhone:  +1-408-321-4699 
OrgNOCEmail:  jbolden@broadsoft.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/BIJ4-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" : "21534",
    "as_handle" : "AS21534",
    "as_name" : "AS21534",
    "admin_contacts" : [ "BIEHL25-ARIN", "BIJ4-ARIN" ],
    "tech_contacts" : [ "BIEHL25-ARIN", "BIJ4-ARIN", "PHILL324-ARIN", "BIJ4-ARIN", "BIEHL25-ARIN" ],
    "abuse_contacts" : [ "BIEHL25-ARIN", "BIJ4-ARIN" ],
    "date_created" : "2015-07-09",
    "date_updated" : "2021-12-09",
    "source" : "https://rdap.arin.net/registry/autnum/21534"
  } ],
  "organization" : {
    "handle" : "BROAD138",
    "name" : "BroadSoft, Inc.",
    "address" : [ "77 Upper Rock Cir", "Suite 200", "Rockville", "MD", "20850", "US" ],
    "street" : "Upper Rock Cir",
    "city" : "Rockville",
    "state" : "MD",
    "zip_code" : "20850",
    "country" : [ "US" ],
    "date_created" : "2010-07-01",
    "date_updated" : "2024-01-10",
    "source" : "https://rdap.arin.net/registry/entity/BROAD138",
    "addressCountry" : "US"
  },
  "administrative_contacts" : [ {
    "handle" : "BIEHL25-ARIN",
    "name" : "Biehl, Jeff",
    "email" : [ "jebiehl@cisco.com" ],
    "phone" : [ "+1-408-321-4776" ],
    "source" : "https://rdap.arin.net/registry/entity/BIEHL25-ARIN"
  }, {
    "handle" : "BIJ4-ARIN",
    "name" : "Bolden II, James",
    "email" : [ "jbolden@broadsoft.com" ],
    "phone" : [ "+1-408-321-4699" ],
    "source" : "https://rdap.arin.net/registry/entity/BIJ4-ARIN"
  } ],
  "technical_contacts" : [ {
    "handle" : "BIEHL25-ARIN",
    "name" : "Biehl, Jeff",
    "email" : [ "jebiehl@cisco.com" ],
    "phone" : [ "+1-408-321-4776" ],
    "source" : "https://rdap.arin.net/registry/entity/BIEHL25-ARIN"
  }, {
    "handle" : "BIJ4-ARIN",
    "name" : "Bolden II, James",
    "email" : [ "jbolden@broadsoft.com" ],
    "phone" : [ "+1-408-321-4699" ],
    "source" : "https://rdap.arin.net/registry/entity/BIJ4-ARIN"
  }, {
    "handle" : "PHILL324-ARIN",
    "name" : "Phillips, Brian",
    "email" : [ "briphill@cisco.com" ],
    "phone" : [ "+1-936-320-8838" ],
    "source" : "https://rdap.arin.net/registry/entity/PHILL324-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "BIEHL25-ARIN",
    "name" : "Biehl, Jeff",
    "email" : [ "jebiehl@cisco.com" ],
    "phone" : [ "+1-408-321-4776" ],
    "source" : "https://rdap.arin.net/registry/entity/BIEHL25-ARIN"
  }, {
    "handle" : "BIJ4-ARIN",
    "name" : "Bolden II, James",
    "email" : [ "jbolden@broadsoft.com" ],
    "phone" : [ "+1-408-321-4699" ],
    "source" : "https://rdap.arin.net/registry/entity/BIJ4-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS58511	Anycast Global Backbone	AU
AS6453	TATA COMMUNICATIONS AMERICA INC	US
AS7474	SingTel Optus Pty Ltd	AU
AS4764	Aussie Broadband	AU
AS63956	5G NETWORK OPERATIONS PTY LTD	AU
AS286	GTT Communications Inc.	US
AS38880	Micron21 Datacentre Pty Ltd	AU
AS13445	Cisco Webex LLC	US
AS45437	Real World - The Core	AU
AS2516	KDDI CORPORATION	JP

Upstreams

AS Number	Description	Country
AS7474	SingTel Optus Pty Ltd	AU
AS6453	TATA COMMUNICATIONS AMERICA INC	US
AS15830	Equinix EMEA Acquisition Enterprises B.V.	NL
AS64073	VETTA TRADING LIMITED	NZ
AS1299	Arelion Sweden AB	SE
AS286	GTT Communications Inc.	US
AS3257	GTT Communications Inc.	US
AS13445	Cisco Webex LLC	US
AS3356	Level 3 Parent, LLC	US
AS6461	Zayo Bandwidth	US