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AS33733 CASTRO TELECOM 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.

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CASTRO TELECOM LLC tecnico.ulisboa.pt

US 0 Routes

AS Data

AS33733

AS33733 – CASTRO TELECOM LLC

AS Number	33733
AS Name	CASTRO-TELECOM
Organization	CASTRO TELECOM LLC(ctl-383)
Country	US
Website	tecnico.ulisboa.pt
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	ISP
Registry	ARIN
Date Allocated	2024-01-22

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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:       33733
ASName:         CASTRO-TELECOM
ASHandle:       AS33733
RegDate:        2024-01-22
Updated:        2024-01-22    
Ref:            https://rdap.arin.net/registry/autnum/33733


OrgName:        CASTRO TELECOM LLC
OrgId:          CTL-383
Address:        530-B HARKLE ROAD STE 100
City:           Santa Fe
StateProv:      NM
PostalCode:     87505
Country:        US
RegDate:        2022-12-28
Updated:        2025-08-26
Ref:            https://rdap.arin.net/registry/entity/CTL-383


OrgTechHandle: TOVLC-ARIN
OrgTechName:   Castro, Tomas Oliveira Valente Leite de
OrgTechPhone:  +1-202-555-0109 
OrgTechEmail:  tomas.leite.castro@tecnico.ulisboa.pt
OrgTechRef:    https://rdap.arin.net/registry/entity/TOVLC-ARIN

OrgNOCHandle: TOVLC-ARIN
OrgNOCName:   Castro, Tomas Oliveira Valente Leite de
OrgNOCPhone:  +1-202-555-0109 
OrgNOCEmail:  tomas.leite.castro@tecnico.ulisboa.pt
OrgNOCRef:    https://rdap.arin.net/registry/entity/TOVLC-ARIN

OrgAbuseHandle: TOVLC-ARIN
OrgAbuseName:   Castro, Tomas Oliveira Valente Leite de
OrgAbusePhone:  +1-202-555-0109 
OrgAbuseEmail:  tomas.leite.castro@tecnico.ulisboa.pt
OrgAbuseRef:    https://rdap.arin.net/registry/entity/TOVLC-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 AS33733?

ASN AS33733 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS33733?

AS33733 is listed under CASTRO TELECOM 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.