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.

AS16421 Realogy Group LLC | IPGeolocation.io

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

Search ASN

AS Data

IP Routes

Raw Whois

Parsed Whois

Peers

Upstreams

Downstreams

Legacy Routes

Realogy Group LLC nrtinc.com

US 0 Routes

AS Data

AS16421

AS16421 – Realogy Group LLC

AS Number	16421
AS Name	NRT-HAWAII
Organization	Realogy Group LLC(realo)
Country	US
Website	nrtinc.com
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2012-06-14

ASN Intelligence API for production workflows

Use ASN data for AS16421 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

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:       16421
ASName:         NRT-HAWAII
ASHandle:       AS16421
RegDate:        2012-06-14
Updated:        2013-11-25    
Ref:            https://rdap.arin.net/registry/autnum/16421


OrgName:        Realogy Group LLC
OrgId:          REALO
Address:        175 Park Ave
City:           Madison
StateProv:      NJ
PostalCode:     07940
Country:        US
RegDate:        2006-11-03
Updated:        2013-12-05
Ref:            https://rdap.arin.net/registry/entity/REALO


OrgTechHandle: NRTHO-ARIN
OrgTechName:   nrthost
OrgTechPhone:  +1-973-407-2000 
OrgTechEmail:  nrthost@nrtinc.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NRTHO-ARIN

OrgAbuseHandle: NRTHO-ARIN
OrgAbuseName:   nrthost
OrgAbusePhone:  +1-973-407-2000 
OrgAbuseEmail:  nrthost@nrtinc.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NRTHO-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

Frequently Asked Questions

What is ASN AS16421?

ASN AS16421 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS16421?

AS16421 is listed under Realogy Group LLC.

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.