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AS399011 C3Aero 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

C3Aero LLC c3aero.com

US 1 Routes

AS Data

AS399011

AS399011 – C3Aero LLC

AS Number	399011
AS Name	C3AERO
Organization	C3Aero LLC (cl-2069)
Country	US
Website	c3aero.com
Number of IPv4 Routes	0
Number of IPv6 Routes	1
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2020-11-05

ASN Intelligence API for production workflows

Use ASN data for AS399011 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2a13:9500:b4::/48	AS399011	C3Aero LLC	C3Aero LLC	~1×10²⁴

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:       399011
ASName:         C3AERO
ASHandle:       AS399011
RegDate:        2020-11-05
Updated:        2025-07-30
Ref:            https://rdap.arin.net/registry/autnum/399011


OrgName:        C3Aero LLC
OrgId:          CL-2069
Address:        1500 District Ave
City:           Burlington
StateProv:      MA
PostalCode:     01803
Country:        US
RegDate:        2019-12-27
Updated:        2024-07-03
Ref:            https://rdap.arin.net/registry/entity/CL-2069


OrgTechHandle: SPERA15-ARIN
OrgTechName:   Speranza, John 
OrgTechPhone:  +1-617-500-0797 
OrgTechEmail:  john@c3aero.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SPERA15-ARIN

OrgAbuseHandle: SPERA15-ARIN
OrgAbuseName:   Speranza, John 
OrgAbusePhone:  +1-617-500-0797 
OrgAbuseEmail:  john@c3aero.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/SPERA15-ARIN

OrgNOCHandle: SPERA15-ARIN
OrgNOCName:   Speranza, John 
OrgNOCPhone:  +1-617-500-0797 
OrgNOCEmail:  john@c3aero.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/SPERA15-ARIN

OrgRoutingHandle: SPERA15-ARIN
OrgRoutingName:   Speranza, John 
OrgRoutingPhone:  +1-617-500-0797 
OrgRoutingEmail:  john@c3aero.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/SPERA15-ARIN

OrgDNSHandle: SPERA15-ARIN
OrgDNSName:   Speranza, John 
OrgDNSPhone:  +1-617-500-0797 
OrgDNSEmail:  john@c3aero.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/SPERA15-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" : "399011",
    "as_handle" : "AS399011",
    "as_name" : "C3AERO",
    "admin_contacts" : [ "SPERA15-ARIN" ],
    "tech_contacts" : [ "SPERA15-ARIN", "SPERA15-ARIN" ],
    "abuse_contacts" : [ "SPERA15-ARIN" ],
    "date_created" : "2020-11-05",
    "date_updated" : "2025-07-30",
    "source" : "https://rdap.arin.net/registry/autnum/399011"
  } ],
  "organization" : {
    "handle" : "CL-2069",
    "name" : "C3Aero LLC",
    "address" : [ "1500 District Ave", "Burlington", "MA", "01803", "US" ],
    "street" : "District Ave",
    "city" : "Burlington",
    "state" : "MA",
    "zip_code" : "01803",
    "country" : [ "US" ],
    "date_created" : "2019-12-27",
    "date_updated" : "2024-07-03",
    "source" : "https://rdap.arin.net/registry/entity/CL-2069",
    "addressCountry" : "US"
  },
  "administrative_contacts" : [ {
    "handle" : "SPERA15-ARIN",
    "name" : "Speranza, John",
    "email" : [ "john@c3aero.com" ],
    "phone" : [ "+1-617-500-0797" ],
    "source" : "https://rdap.arin.net/registry/entity/SPERA15-ARIN"
  } ],
  "technical_contacts" : [ {
    "handle" : "SPERA15-ARIN",
    "name" : "Speranza, John",
    "email" : [ "john@c3aero.com" ],
    "phone" : [ "+1-617-500-0797" ],
    "source" : "https://rdap.arin.net/registry/entity/SPERA15-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "SPERA15-ARIN",
    "name" : "Speranza, John",
    "email" : [ "john@c3aero.com" ],
    "phone" : [ "+1-617-500-0797" ],
    "source" : "https://rdap.arin.net/registry/entity/SPERA15-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS3356	Level 3 Parent, LLC	US

Frequently Asked Questions

What is ASN AS399011?

ASN AS399011 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS399011?

AS399011 is listed under C3Aero 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.