ASN AS27557 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS27557?

AS27557 is listed under Catalina Broadband Solutions, LLC.

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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AS27557 Catalina Broadband Solutions, LLC

ASN Lookup Tool

Catalina Broadband Solutions, LLC midatlanticbb.com

US 7 Routes

AS Data

AS27557

AS27557 – Catalina Broadband Solutions, LLC

AS Number	27557
AS Name	AS27557
Organization	Catalina Broadband Solutions, LLC (cbsl-9)
Country	US
Website	midatlanticbb.com
Number of IPv4 Routes	7
Number of IPv6 Routes	0
ASN type	ISP
Registry	ARIN
Date Allocated	2009-12-28

ASN Intelligence API for production workflows

Use ASN data for AS27557 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
66.225.118.0/24	AS27557	Catalina Broadband Solutions, LLC	yondoo BroadBand	256
66.225.117.0/24	AS27557	Catalina Broadband Solutions, LLC	yondoo BroadBand	256
66.225.124.0/23	AS27557	Catalina Broadband Solutions, LLC	yondoo BroadBand	512
66.225.107.0/24	AS27557	Catalina Broadband Solutions, LLC	Economic Computer Systems Inc. dba Mid Atlantic Broadband	256
66.225.126.0/23	AS27557	Catalina Broadband Solutions, LLC	yondoo BroadBand	512
66.225.106.0/24	AS27557	Catalina Broadband Solutions, LLC	Economic Computer Systems Inc. dba Mid Atlantic Broadband	256
66.225.123.0/24	AS27557	Catalina Broadband Solutions, LLC	yondoo BroadBand	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:       27557
ASName:         AS27557
ASHandle:       AS27557
RegDate:        2009-12-28
Updated:        2013-06-18
Ref:            https://rdap.arin.net/registry/autnum/27557


OrgName:        Catalina Broadband Solutions, LLC
OrgId:          CBSL-9
Address:        1306 Concourse Dr,
City:           Linthicum Heights
StateProv:      MD
PostalCode:     21090
Country:        US
RegDate:        2013-06-04
Updated:        2025-07-28
Ref:            https://rdap.arin.net/registry/entity/CBSL-9


OrgTechHandle: VOE-ARIN
OrgTechName:   VP Operations and Engineering
OrgTechPhone:  +1-503-715-2526 
OrgTechEmail:  kscarzafava@csidigital.net
OrgTechRef:    https://rdap.arin.net/registry/entity/VOE-ARIN

OrgTechHandle: ENGIN11-ARIN
OrgTechName:   MABB Engineering
OrgTechPhone:  +1-410-727-8245 
OrgTechEmail:  dnsadmin@midatlanticbb.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ENGIN11-ARIN

OrgAbuseHandle: ABUSE571-ARIN
OrgAbuseName:   MABB Abuse Department
OrgAbusePhone:  +1-410-727-8245 
OrgAbuseEmail:  abuse@midatlanticbb.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE571-ARIN

OrgNOCHandle: NOC1520-ARIN
OrgNOCName:   MABB Network Operations Center
OrgNOCPhone:  +1-410-727-8250 
OrgNOCEmail:  noc@midatlanticbb.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC1520-ARIN

OrgTechHandle: SCARZ-ARIN
OrgTechName:   Scarzafava, Keith 
OrgTechPhone:  +1-503-715-2526 
OrgTechEmail:  kscarzafava@csidigital.net
OrgTechRef:    https://rdap.arin.net/registry/entity/SCARZ-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" : "27557",
    "as_handle" : "AS27557",
    "as_name" : "AS27557",
    "tech_contacts" : [ "VOE-ARIN", "ENGIN11-ARIN", "SCARZ-ARIN" ],
    "abuse_contacts" : [ "ABUSE571-ARIN" ],
    "date_created" : "2009-12-28",
    "date_updated" : "2013-06-18",
    "source" : "https://rdap.arin.net/registry/autnum/27557"
  } ],
  "organization" : {
    "handle" : "CBSL-9",
    "name" : "Catalina Broadband Solutions, LLC",
    "address" : [ "1306 Concourse Dr,", "Linthicum Heights", "MD", "21090", "US" ],
    "street" : "Concourse Dr",
    "city" : "Linthicum Heights",
    "state" : "MD",
    "zip_code" : "21090",
    "country" : [ "US" ],
    "date_created" : "2013-06-04",
    "date_updated" : "2025-07-28",
    "source" : "https://rdap.arin.net/registry/entity/CBSL-9",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "VOE-ARIN",
    "name" : "VP Operations and Engineering",
    "email" : [ "kscarzafava@csidigital.net" ],
    "phone" : [ "+1-503-715-2526" ],
    "source" : "https://rdap.arin.net/registry/entity/VOE-ARIN"
  }, {
    "handle" : "ENGIN11-ARIN",
    "name" : "MABB Engineering",
    "email" : [ "dnsadmin@midatlanticbb.com" ],
    "phone" : [ "+1-410-727-8245" ],
    "source" : "https://rdap.arin.net/registry/entity/ENGIN11-ARIN"
  }, {
    "handle" : "SCARZ-ARIN",
    "name" : "Scarzafava, Keith",
    "email" : [ "kscarzafava@csidigital.net" ],
    "phone" : [ "+1-503-715-2526" ],
    "source" : "https://rdap.arin.net/registry/entity/SCARZ-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "ABUSE571-ARIN",
    "name" : "MABB Abuse Department",
    "email" : [ "abuse@midatlanticbb.com" ],
    "phone" : [ "+1-410-727-8245" ],
    "source" : "https://rdap.arin.net/registry/entity/ABUSE571-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS54483	GeoLinks	US

Upstreams

AS Number	Description	Country
AS54483	GeoLinks	US

Contacts

Email Contacts

dnsadmin@midatlanticbb.com kscarzafava@csidigital.net

Abuse Contacts

abuse@midatlanticbb.com