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AS21604 CHEMONICS INTERNATIONAL, INC.

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

CHEMONICS INTERNATIONAL, INC. chemonics.com

US 1 Routes

AS Data

AS21604

AS21604 – CHEMONICS INTERNATIONAL, INC.

AS Number	21604
AS Name	CHEMONICS-USA
Organization	CHEMONICS INTERNATIONAL, INC.(chemon-2)
Country	US
Website	chemonics.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2001-05-30

ASN Intelligence API for production workflows

Use ASN data for AS21604 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
208.70.228.0/22	AS21604	CHEMONICS INTERNATIONAL, INC.	CHEMONICS INTERNATIONAL, INC.	1024

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:       21604
ASName:         CHEMONICS-USA
ASHandle:       AS21604
RegDate:        2001-05-30
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/21604


OrgName:        CHEMONICS INTERNATIONAL, INC.
OrgId:          CHEMON-2
Address:        1717 H ST. NW
City:           Washington
StateProv:      DC
PostalCode:     20006
Country:        US
RegDate:        2001-05-30
Updated:        2012-05-14
Ref:            https://rdap.arin.net/registry/entity/CHEMON-2


OrgTechHandle: PARKS27-ARIN
OrgTechName:   Park, Samuel 
OrgTechPhone:  +1-202-775-2946 
OrgTechEmail:  spark@chemonics.com
OrgTechRef:    https://rdap.arin.net/registry/entity/PARKS27-ARIN

OrgTechHandle: PS803-ARIN
OrgTechName:   Souza, Pete 
OrgTechPhone:  +1-202-955-7493 
OrgTechEmail:  psouza@chemonics.net
OrgTechRef:    https://rdap.arin.net/registry/entity/PS803-ARIN

OrgAbuseHandle: PS803-ARIN
OrgAbuseName:   Souza, Pete 
OrgAbusePhone:  +1-202-955-7493 
OrgAbuseEmail:  psouza@chemonics.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/PS803-ARIN

RTechHandle: PS803-ARIN
RTechName:   Souza, Pete 
RTechPhone:  +1-202-955-7493 
RTechEmail:  psouza@chemonics.net
RTechRef:    https://rdap.arin.net/registry/entity/PS803-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
AS46887	Crown Castle Fiber LLC	US

Upstreams

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US

Frequently Asked Questions

What is ASN AS21604?

ASN AS21604 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21604?

AS21604 is listed under CHEMONICS INTERNATIONAL, INC..

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.