ASN AS21738 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21738?

AS21738 is listed under Rozint.

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.

AS21738 Rozint | IPGeolocation.io

Rozint rozint.cloud

US 14 Routes

AS Data

AS21738

AS21738 – Rozint

AS Number	21738
AS Name	ROZINT
Organization	Rozint (rl-895)
Country	US
Website	rozint.cloud
Number of IPv4 Routes	6
Number of IPv6 Routes	8
ASN type	ISP
Registry	ARIN
Date Allocated	2023-03-17

ASN Intelligence API for production workflows

Use ASN data for AS21738 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2602:2b7:c00::/40	AS21738	Rozint	Rozint	~309×10²⁴
140.235.156.0/24	AS21738	Rozint	Rozint	256
2602:2b7:d00::/40	AS21738	Rozint	Rozint	~309×10²⁴
2602:2b7:e1::/48	AS21738	Rozint	Rozint	~1×10²⁴
2602:2b7:600::/48	AS21738	Rozint	Rozint	~1×10²⁴
23.150.40.0/24	AS21738	Rozint	Rozint	256
2.59.255.0/24	AS21738	Rozint	F4 Networks, LLC	256
2602:2b7:c8::/48	AS21738	Rozint	Rozint	~1×10²⁴
2602:2b7:e2::/48	AS21738	Rozint	Rozint	~1×10²⁴
2602:2b7:40::/48	AS21738	Rozint	Rozint	~1×10²⁴
43.255.189.0/24	AS21738	Rozint	Internet Utilities NA LLC	256
2602:2b7:55::/48	AS21738	Rozint	Rozint	~1×10²⁴
216.40.92.0/22	AS21738	Rozint	F4 Networks	1024
23.150.41.0/24	AS21738	Rozint	Rozint	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:       21738
ASName:         ROZINT
ASHandle:       AS21738
RegDate:        2023-03-17
Updated:        2023-03-17
Comment:        https://rozint.com
Ref:            https://rdap.arin.net/registry/autnum/21738


OrgName:        Rozint
OrgId:          RL-895
Address:        30 N Gould St Ste R
City:           Sheridan
StateProv:      WY
PostalCode:     82801
Country:        US
RegDate:        2023-03-13
Updated:        2025-03-24
Comment:        https://rozint.com
Ref:            https://rdap.arin.net/registry/entity/RL-895


OrgAbuseHandle: NAD115-ARIN
OrgAbuseName:   Network Abuse Department
OrgAbusePhone:  +1-808-909-8289 
OrgAbuseEmail:  abuse@rozint.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NAD115-ARIN

OrgNOCHandle: NOC33603-ARIN
OrgNOCName:   Network Operations Center
OrgNOCPhone:  +1-808-909-8289 
OrgNOCEmail:  noc@rozint.cloud
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC33603-ARIN

OrgTechHandle: ITDEP305-ARIN
OrgTechName:   IT Department
OrgTechPhone:  +1-808-909-8289 
OrgTechEmail:  it@rozint.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ITDEP305-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" : "21738",
    "as_handle" : "AS21738",
    "as_name" : "ROZINT",
    "tech_contacts" : [ "ITDEP305-ARIN" ],
    "abuse_contacts" : [ "NAD115-ARIN" ],
    "date_created" : "2023-03-17",
    "date_updated" : "2023-03-17",
    "source" : "https://rdap.arin.net/registry/autnum/21738"
  } ],
  "organization" : {
    "handle" : "RL-895",
    "name" : "Rozint",
    "address" : [ "30 N Gould St Ste R", "Sheridan", "WY", "82801", "US" ],
    "street" : "N Gould St Ste R",
    "city" : "Sheridan",
    "state" : "WY",
    "zip_code" : "82801",
    "country" : [ "US" ],
    "date_created" : "2023-03-13",
    "date_updated" : "2025-03-24",
    "source" : "https://rdap.arin.net/registry/entity/RL-895",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "ITDEP305-ARIN",
    "name" : "IT Department",
    "email" : [ "it@rozint.com" ],
    "phone" : [ "+1-808-909-8289" ],
    "source" : "https://rdap.arin.net/registry/entity/ITDEP305-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "NAD115-ARIN",
    "name" : "Network Abuse Department",
    "email" : [ "abuse@rozint.com" ],
    "phone" : [ "+1-808-909-8289" ],
    "source" : "https://rdap.arin.net/registry/entity/NAD115-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS151349	Yuki Network Ltd	KR
AS58057	Securebit AG	CH
AS2906	Netflix Streaming Services Inc.	US
AS200242	Ember Ana Reimer	DE
AS393577	Tritan Development	US
AS30110	Advanced Communications Technology	US
AS21928	T-Mobile USA, Inc.	US
AS393775	IP Pathways, LLC	US
AS207852	Yonghan Ching	MY
AS59645	Tobias Fiebig	DE
AS53388	Tefexia LC	US
AS53597	Hoyos Consulting LLC	US
AS46733	x6c	US
AS714	Apple Inc.	US
AS26006	Exodo LLC	US
AS11852	White House Custom Colour, Inc	US
AS400818	Ausra LLC	US
AS36692	Cisco OpenDNS, LLC	US
AS6517	LAKENETWORKS	US
AS270142	Castor Networks Mexico	MX
AS401332	Triplebit	US
AS27523	Kawaii Networks LLC	US
AS1003	andrewnet	US
AS803	Saskatchewan Telecommunications	CA
AS52210	Accuris Technologies Ltd.	CA
AS31834	TELA, Incorporated	US
AS216107	Noah van der Aa trading as Frumentum Media	NL
AS1828	Unitas Global	US
AS1299	Arelion Sweden AB	SE
AS26794	Dakota Carrier Network	US
AS14230	ARK Data Centers LLC	US
AS402247	flew llc	US
AS30114	Decima LLC	US
AS399542	Flying Goose Systems	CA
AS401710	CloudMesh Labs LLC	US
AS401538	Nova86	US
AS212895	Johannes Ernst	DE
AS32621	Twin City VoIP, Inc.	US
AS401869	Shine Summit LLC	US
AS52025	ParadoxNetworks Limited	GB
AS40328	AcenTek	US
AS13767	DataBank Holdings, Ltd.	US
AS40382	Hennepin County	US
AS10310	Yahoo Holdings Inc.	US
AS47689	Pudu, LLC	US
AS400451	CMTC - Curium Technologies	US
AS53343	Ntrix Infrastructure	US
AS42	WoodyNet, Inc.	US
AS2381	WiscNet	US
AS213880	Jorge Janaite Neto	BR
AS25694	Atomic Data LLC	US
AS20495	We Dare B.V.	NL
AS30690	Kazehana Networks LLC	US
AS22768	SYNERGY BROADBAND	US
AS6939	Hurricane Electric LLC	US
AS20940	Akamai International B.V.	NL
AS10242	US Internet Corp	US
AS11232	Midcontinent Communications	US
AS11317	Great Plains Network	US
AS202340	Sanoj Kumar	IN

Upstreams

AS Number	Description	Country
AS52025	ParadoxNetworks Limited	GB
AS1299	Arelion Sweden AB	SE
AS6939	Hurricane Electric LLC	US
AS32621	Twin City VoIP, Inc.	US
AS32097	WholeSale Internet, Inc.	US

Downstreams

AS Number	Description	Country
AS401710	CloudMesh Labs LLC	US
AS151349	Yuki Network Ltd	KR
AS30690	Kazehana Networks LLC	US
AS58057	Securebit AG	CH
AS14923	Graham Technology Solutions LLC	US
AS200242	Ember Ana Reimer	DE
AS207852	Yonghan Ching	MY
AS212895	Johannes Ernst	DE
AS202340	Sanoj Kumar	IN
AS401869	Shine Summit LLC	US
AS53388	Tefexia LC	US
AS210250	K Media Tech Ltd.	BG
AS26006	Exodo LLC	US
AS23459	applebee	US
AS401859	D3VUR LLC	US
AS200160	Putu Paundrayana Waringin	ID
AS47689	Pudu, LLC	US
AS6517	LAKENETWORKS	US
AS270142	Castor Networks Mexico	MX
AS54148	Dynamic Quantum Networks	CA
AS54852	F4 Networks	US
AS400451	IANA - Autonomous System Number	US
AS216052	Craig Schulz	US
AS216107	Noah van der Aa trading as Frumentum Media	NL
AS213880	Jorge Janaite Neto	BR
AS402247	flew llc	US
AS216242	Jeremy Utley	US
AS30114	Decima LLC	US
AS399542	Flying Goose Systems	CA
AS214430	Takahiro Fukushima	JP