ASN AS21881 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21881?

AS21881 is listed under RAPID RESPONSE MONITORING SERVICES INCORPORATED.

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.

AS21881 RAPID RESPONSE MONITORING SERVICES INCORPORATED

ASN Lookup Tool

RAPID RESPONSE MONITORING SERVICES INCORPORATED rrms.com

US 4 Routes

AS Data

AS21881

AS21881 – RAPID RESPONSE MONITORING SERVICES INCORPORATED

AS Number	21881
AS Name	RRMS-CORONA
Organization	RAPID RESPONSE MONITORING SERVICES INCORPORATED(rrm-8)
Country	US
Website	rrms.com
Number of IPv4 Routes	4
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2015-02-12

ASN Intelligence API for production workflows

Use ASN data for AS21881 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
216.151.47.0/24	AS21881	RAPID RESPONSE MONITORING SERVICES INCORPORATED	RAPID RESPONSE MONITORING SERVICES INCORPORATED	256
216.151.46.0/23	AS21881	RAPID RESPONSE MONITORING SERVICES INCORPORATED	RAPID RESPONSE MONITORING SERVICES INCORPORATED	512
216.151.46.0/24	AS21881	RAPID RESPONSE MONITORING SERVICES INCORPORATED	RAPID RESPONSE MONITORING SERVICES INCORPORATED	256
174.46.231.128/26	AS21881	RAPID RESPONSE MONITORING SERVICES INCORPORATED	Level 3 Parent, LLC	64

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:       21881
ASName:         RRMS-CORONA
ASHandle:       AS21881
RegDate:        2015-02-12
Updated:        2015-02-12    
Ref:            https://rdap.arin.net/registry/autnum/21881


OrgName:        RAPID RESPONSE MONITORING SERVICES INCORPORATED
OrgId:          RRM-8
Address:        550 East Genesee Street
City:           Syracuse
StateProv:      NY
PostalCode:     13202
Country:        US
RegDate:        2001-03-09
Updated:        2025-05-28
Ref:            https://rdap.arin.net/registry/entity/RRM-8


OrgTechHandle: KRW5-ARIN
OrgTechName:   Walker, Kenneth Robert
OrgTechPhone:  +1-800-325-5300 
OrgTechEmail:  krwalker@rrms.com
OrgTechRef:    https://rdap.arin.net/registry/entity/KRW5-ARIN

OrgAbuseHandle: BOURD18-ARIN
OrgAbuseName:   Bourdon, Randy 
OrgAbusePhone:  +1-800-324-2105 
OrgAbuseEmail:  rbourdon@rrms.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/BOURD18-ARIN

OrgTechHandle: BOURD18-ARIN
OrgTechName:   Bourdon, Randy 
OrgTechPhone:  +1-800-324-2105 
OrgTechEmail:  rbourdon@rrms.com
OrgTechRef:    https://rdap.arin.net/registry/entity/BOURD18-ARIN

OrgAbuseHandle: KRW5-ARIN
OrgAbuseName:   Walker, Kenneth Robert
OrgAbusePhone:  +1-800-325-5300 
OrgAbuseEmail:  krwalker@rrms.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/KRW5-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
AS701	Verizon Business/UUnet	US
AS3356	Level 3 Parent, LLC	US
AS701	Verizon Business	US

Upstreams

AS Number	Description	Country
AS3356	Level 3 Parent, LLC	US
AS701	Verizon Business	US