What is ASN AS398991?

ASN AS398991 is an Autonomous System Number used to identify a network for BGP internet routing.

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?

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AS398991 X99 | IPGeolocation.io

ASN Lookup Tool

X99 x99.cloud

US 68 Routes

AS Data

AS398991

AS398991 – X99

AS Number	398991
AS Name	X99-US
Organization	X99 (xil-3)
Country	US
Website	x99.cloud
Number of IPv4 Routes	62
Number of IPv6 Routes	6
ASN type	ISP
Registry	ARIN
Date Allocated	2024-02-22

ASN Intelligence API for production workflows

Use ASN data for AS398991 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
209.131.123.0/24	AS398991	Internap Holding LLC	X99	256
209.131.121.0/24	AS398991	X99	X	256
2607:a540:a000::/38	AS398991	X99	X	~1×10²⁷
38.99.238.0/23	AS398991	X99	X99 US LLC	512
38.247.68.0/24	AS398991	X99	WORLD SISTEM TELECOM WST S.A.S.	256
38.183.189.0/24	AS398991	X99	X99 US LLC	256
38.183.188.0/23	AS398991	X99	X99 US LLC	512
206.109.58.0/24	AS272786	X99 INTERNET	X	256
209.131.122.0/23	AS398991	Internap Holding LLC	X99	512
199.245.234.0/24	AS398991	Aptum Technologies	X99	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:       398991
ASName:         X99-US
ASHandle:       AS398991
RegDate:        2024-02-22
Updated:        2024-02-22
Ref:            https://rdap.arin.net/registry/autnum/398991


OrgName:        X99
OrgId:          XIL-3
Address:        800 N King Street, Suite 304 1938
City:           Wilmington
StateProv:      DE
PostalCode:     19801
Country:        US
RegDate:        2024-02-02
Updated:        2024-02-15
Ref:            https://rdap.arin.net/registry/entity/XIL-3


OrgTechHandle: NOCX1-ARIN
OrgTechName:   NOC X99
OrgTechPhone:  +1-512-890-1509 
OrgTechEmail:  noc@x99cloud.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NOCX1-ARIN

OrgAbuseHandle: NAX-ARIN
OrgAbuseName:   Network Abuse - X99
OrgAbusePhone:  +1-512-890-1509 
OrgAbuseEmail:  netabuse@x99.cloud
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NAX-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" : "398991",
    "as_handle" : "AS398991",
    "as_name" : "X99-US",
    "tech_contacts" : [ "NOCX1-ARIN" ],
    "abuse_contacts" : [ "NAX-ARIN" ],
    "date_created" : "2024-02-22",
    "date_updated" : "2024-02-22",
    "source" : "https://rdap.arin.net/registry/autnum/398991"
  } ],
  "organization" : {
    "handle" : "XIL-3",
    "name" : "X99",
    "address" : [ "800 N King Street, Suite 304 1938", "Wilmington", "DE", "19801", "US" ],
    "street" : "N King Street",
    "city" : "Wilmington",
    "state" : "DE",
    "zip_code" : "19801",
    "country" : [ "US" ],
    "date_created" : "2024-02-02",
    "date_updated" : "2024-02-15",
    "source" : "https://rdap.arin.net/registry/entity/XIL-3",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "NOCX1-ARIN",
    "name" : "NOC X99",
    "email" : [ "noc@x99cloud.com" ],
    "phone" : [ "+1-512-890-1509" ],
    "source" : "https://rdap.arin.net/registry/entity/NOCX1-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "NAX-ARIN",
    "name" : "Network Abuse - X99",
    "email" : [ "netabuse@x99.cloud" ],
    "phone" : [ "+1-512-890-1509" ],
    "source" : "https://rdap.arin.net/registry/entity/NAX-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS6762	TELECOM ITALIA SPARKLE S.p.A.	IT
AS7195	EDGEUNO S.A.S	CO
AS262589	SAMM TECNOLOGIA E TELECOMUNICACOES S.A	BR
AS63956	5G NETWORK OPERATIONS PTY LTD	AU
AS6939	Hurricane Electric LLC	US
AS38880	Micron21 Datacentre Pty Ltd	AU
AS4775	Globe Telecoms	PH
AS22356	Durand do Brasil Ltda	BR
AS14537	Continent 8 LLC	US
AS4230	CLARO S.A.	BR

Upstreams

AS Number	Description	Country
AS60068	Datacamp Limited	GB
AS64126	DOMINICAN TELECOM PRIME, DTP, S.R.L.	DO
AS9304	HGC Global Communications Limited	HK
AS58453	China Mobile International Limited	HK
AS6762	TELECOM ITALIA SPARKLE S.p.A.	IT
AS7195	EDGEUNO S.A.S	CO
AS14840	BR.Digital Telecom	BR
AS25091	IP Max SA	CH
AS6939	Hurricane Electric LLC	US
AS6057	Administracion Nacional de Telecomunicaciones	UY

Downstreams

AS Number	Description	Country
AS272786	X99 INTERNET	BR
AS402008	L7CORE, LLC	US

Contacts

Email Contacts

noc@x99cloud.com

Abuse Contacts

netabuse@x99.cloud

Legacy Routes

38.247.68.0/23