ASN AS23528 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS23528?

AS23528 is listed under Bird.com 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.

AS23528 Bird.com Inc. | IPGeolocation.io

ASN Lookup Tool

Bird.com Inc. bird.com

US 79 Routes

AS Data

AS23528

AS23528 – Bird.com Inc.

AS Number	23528
AS Name	SPARKPOST
Organization	Bird.com Inc.(ms-820)
Country	US
Website	bird.com
Number of IPv4 Routes	79
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2018-04-16

ASN Intelligence API for production workflows

Use ASN data for AS23528 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
223.165.112.0/24	AS23528	Bird.com Inc.	Braze, inc	256
137.22.236.0/24	AS23528	Bird.com Inc.	Braze, inc	256
147.253.220.0/23	AS23528	Bird.com Inc.	Bird.com Inc.	512
137.22.231.0/24	AS23528	Bird.com Inc.	Braze, inc	256
223.165.117.0/24	AS23528	Bird.com Inc.	Braze, inc	256
156.70.24.0/23	AS23528	Bird.com Inc.	Bird.com Inc.	512
168.203.46.0/23	AS23528	Bird.com Inc.	Bird.com Inc.	512
192.174.94.0/24	AS23528	Bird.com Inc.	Bird.com Inc.	256
103.11.244.0/24	AS23528	Bird.com Inc.	NIXI	256
168.203.34.0/23	AS23528	Bird.com Inc.	Bird.com Inc.	512

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:       23528
ASName:         SPARKPOST
ASHandle:       AS23528
RegDate:        2018-04-16
Updated:        2018-04-16    
Ref:            https://rdap.arin.net/registry/autnum/23528


OrgName:        Bird.com Inc.
OrgId:          MS-820
Address:        4701 Sangamore Road suite 100N-139
City:           Bethesda
StateProv:      MD
PostalCode:     20816
Country:        US
RegDate:        2015-12-09
Updated:        2025-08-14
Ref:            https://rdap.arin.net/registry/entity/MS-820


OrgAbuseHandle: SEA25-ARIN
OrgAbuseName:   SparkPost Elite Abuse
OrgAbusePhone:  +1-410-872-4910 
OrgAbuseEmail:  abuse@sparkpostelite.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/SEA25-ARIN

OrgDNSHandle: PARMA32-ARIN
OrgDNSName:   Parman, Tyler 
OrgDNSPhone:  +1-415-578-5222 
OrgDNSEmail:  tyler.parman@bird.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/PARMA32-ARIN

OrgTechHandle: PILLA10-ARIN
OrgTechName:   Pillai, Balasubramania 
OrgTechPhone:  +1-410-953-9519 
OrgTechEmail:  balu.pillai@bird.com
OrgTechRef:    https://rdap.arin.net/registry/entity/PILLA10-ARIN

OrgTechHandle: PARMA32-ARIN
OrgTechName:   Parman, Tyler 
OrgTechPhone:  +1-415-578-5222 
OrgTechEmail:  tyler.parman@bird.com
OrgTechRef:    https://rdap.arin.net/registry/entity/PARMA32-ARIN

OrgNOCHandle: SEA25-ARIN
OrgNOCName:   SparkPost Elite Abuse
OrgNOCPhone:  +1-410-872-4910 
OrgNOCEmail:  abuse@sparkpostelite.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/SEA25-ARIN

OrgRoutingHandle: PARMA32-ARIN
OrgRoutingName:   Parman, Tyler 
OrgRoutingPhone:  +1-415-578-5222 
OrgRoutingEmail:  tyler.parman@bird.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/PARMA32-ARIN

OrgTechHandle: MATTR5-ARIN
OrgTechName:   Mattrat, Felix 
OrgTechPhone:  +3000000000 
OrgTechEmail:  felix@bird.com
OrgTechRef:    https://rdap.arin.net/registry/entity/MATTR5-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
AS1239	Cogent Communications, LLC	US
AS6939	Hurricane Electric LLC	US
AS286	GTT Communications Inc.	NL
AS286	GTT Communications Inc.	US
AS3257	GTT Communications Inc.	US
AS174	Cogent Communications, LLC	US