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AS31821 Riverdale Country School

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

Riverdale Country School riverdale.edu

US 1 Routes

AS Data

AS31821

AS31821 – Riverdale Country School

AS Number	31821
AS Name	AS-RCS
Organization	Riverdale Country School (rcs-6)
Country	US
Website	riverdale.edu
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	EDUCATION
Registry	ARIN
Date Allocated	2004-01-02

ASN Intelligence API for production workflows

Use ASN data for AS31821 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
198.62.116.0/24	AS31821	Riverdale Country School	Riverdale Country School	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:       31821
ASName:         AS-RCS
ASHandle:       AS31821
RegDate:        2004-01-02
Updated:        2012-02-24
Ref:            https://rdap.arin.net/registry/autnum/31821


OrgName:        Riverdale Country School
OrgId:          RCS-6
Address:        5250 Fieldston Road
City:           Bronx
StateProv:      NY
PostalCode:     10471
Country:        US
RegDate:        1993-02-24
Updated:        2014-07-25
Ref:            https://rdap.arin.net/registry/entity/RCS-6


OrgNOCHandle: KINGJ18-ARIN
OrgNOCName:   King, Jonathan 
OrgNOCPhone:  +1-718-549-8810 
OrgNOCEmail:  jking@riverdale.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/KINGJ18-ARIN

OrgTechHandle: KINGJ18-ARIN
OrgTechName:   King, Jonathan 
OrgTechPhone:  +1-718-549-8810 
OrgTechEmail:  jking@riverdale.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/KINGJ18-ARIN

OrgAbuseHandle: KINGJ18-ARIN
OrgAbuseName:   King, Jonathan 
OrgAbusePhone:  +1-718-549-8810 
OrgAbuseEmail:  jking@riverdale.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/KINGJ18-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" : "31821",
    "as_handle" : "AS31821",
    "as_name" : "AS-RCS",
    "tech_contacts" : [ "KINGJ18-ARIN" ],
    "abuse_contacts" : [ "KINGJ18-ARIN" ],
    "date_created" : "2004-01-02",
    "date_updated" : "2012-02-24",
    "source" : "https://rdap.arin.net/registry/autnum/31821"
  } ],
  "organization" : {
    "handle" : "RCS-6",
    "name" : "Riverdale Country School",
    "address" : [ "5250 Fieldston Road", "Bronx", "NY", "10471", "US" ],
    "street" : "Fieldston Road",
    "city" : "Bronx",
    "state" : "NY",
    "zip_code" : "10471",
    "country" : [ "US" ],
    "date_created" : "1993-02-24",
    "date_updated" : "2014-07-25",
    "source" : "https://rdap.arin.net/registry/entity/RCS-6",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "KINGJ18-ARIN",
    "name" : "King, Jonathan",
    "email" : [ "jking@riverdale.edu" ],
    "phone" : [ "+1-718-549-8810" ],
    "source" : "https://rdap.arin.net/registry/entity/KINGJ18-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "KINGJ18-ARIN",
    "name" : "King, Jonathan",
    "email" : [ "jking@riverdale.edu" ],
    "phone" : [ "+1-718-549-8810" ],
    "source" : "https://rdap.arin.net/registry/entity/KINGJ18-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS33059	Momentum Telecom, Inc.	US
AS25645	Momentum Telecom, Inc.	US

Upstreams

AS Number	Description	Country
AS25645	Momentum Telecom, Inc.	US

Frequently Asked Questions

What is ASN AS31821?

ASN AS31821 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS31821?

AS31821 is listed under Riverdale Country School.

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.