ASN AS33553 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS33553?

AS33553 is listed under SOUND TRANSIT.

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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AS33553 SOUND TRANSIT | IPGeolocation.io

ASN Lookup Tool

SOUND TRANSIT soundtransit.org

US 1 Routes

AS Data

AS33553

AS33553 – SOUND TRANSIT

AS Number	33553
AS Name	SOUNDTRANSIT
Organization	SOUND TRANSIT (cpsrta)
Country	US
Website	soundtransit.org
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	2012-05-04

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Use ASN data for AS33553 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
199.191.49.0/24	AS33553	SOUND TRANSIT	SOUND TRANSIT	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:       33553
ASName:         SOUNDTRANSIT
ASHandle:       AS33553
RegDate:        2012-05-04
Updated:        2025-10-02
Ref:            https://rdap.arin.net/registry/autnum/33553


OrgName:        SOUND TRANSIT
OrgId:          CPSRTA
Address:        401 S Jackson St
City:           Seattle
StateProv:      WA
PostalCode:     98104
Country:        US
RegDate:        2012-04-27
Updated:        2025-10-09
Ref:            https://rdap.arin.net/registry/entity/CPSRTA


OrgRoutingHandle: MARTI3425-ARIN
OrgRoutingName:   Martinson, Tom 
OrgRoutingPhone:  +1-206-689-4862 
OrgRoutingEmail:  tom.martinson@soundtransit.org
OrgRoutingRef:    https://rdap.arin.net/registry/entity/MARTI3425-ARIN

OrgDNSHandle: MARTI3425-ARIN
OrgDNSName:   Martinson, Tom 
OrgDNSPhone:  +1-206-689-4862 
OrgDNSEmail:  tom.martinson@soundtransit.org
OrgDNSRef:    https://rdap.arin.net/registry/entity/MARTI3425-ARIN

OrgAbuseHandle: MARTI3425-ARIN
OrgAbuseName:   Martinson, Tom 
OrgAbusePhone:  +1-206-689-4862 
OrgAbuseEmail:  tom.martinson@soundtransit.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/MARTI3425-ARIN

OrgAbuseHandle: NETWO5099-ARIN
OrgAbuseName:   Network Team
OrgAbusePhone:  +1-206-398-5492 
OrgAbuseEmail:  ITNetworkEngineering@soundtransit.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO5099-ARIN

OrgRoutingHandle: JAMIS95-ARIN
OrgRoutingName:   Jamison, Stuart 
OrgRoutingPhone:  +1-206-398-5117 
OrgRoutingEmail:  stuart.jamison@soundtransit.org
OrgRoutingRef:    https://rdap.arin.net/registry/entity/JAMIS95-ARIN

OrgTechHandle: MARTI3425-ARIN
OrgTechName:   Martinson, Tom 
OrgTechPhone:  +1-206-689-4862 
OrgTechEmail:  tom.martinson@soundtransit.org
OrgTechRef:    https://rdap.arin.net/registry/entity/MARTI3425-ARIN

OrgTechHandle: NETWO5099-ARIN
OrgTechName:   Network Team
OrgTechPhone:  +1-206-398-5492 
OrgTechEmail:  ITNetworkEngineering@soundtransit.org
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO5099-ARIN

OrgNOCHandle: MARTI3425-ARIN
OrgNOCName:   Martinson, Tom 
OrgNOCPhone:  +1-206-689-4862 
OrgNOCEmail:  tom.martinson@soundtransit.org
OrgNOCRef:    https://rdap.arin.net/registry/entity/MARTI3425-ARIN

OrgNOCHandle: NETWO5099-ARIN
OrgNOCName:   Network Team
OrgNOCPhone:  +1-206-398-5492 
OrgNOCEmail:  ITNetworkEngineering@soundtransit.org
OrgNOCRef:    https://rdap.arin.net/registry/entity/NETWO5099-ARIN

OrgTechHandle: JAMIS95-ARIN
OrgTechName:   Jamison, Stuart 
OrgTechPhone:  +1-206-398-5117 
OrgTechEmail:  stuart.jamison@soundtransit.org
OrgTechRef:    https://rdap.arin.net/registry/entity/JAMIS95-ARIN

RNOCHandle: MARTI3425-ARIN
RNOCName:   Martinson, Tom 
RNOCPhone:  +1-206-689-4862 
RNOCEmail:  tom.martinson@soundtransit.org
RNOCRef:    https://rdap.arin.net/registry/entity/MARTI3425-ARIN

RTechHandle: MARTI3425-ARIN
RTechName:   Martinson, Tom 
RTechPhone:  +1-206-689-4862 
RTechEmail:  tom.martinson@soundtransit.org
RTechRef:    https://rdap.arin.net/registry/entity/MARTI3425-ARIN

RAbuseHandle: MARTI3425-ARIN
RAbuseName:   Martinson, Tom 
RAbusePhone:  +1-206-689-4862 
RAbuseEmail:  tom.martinson@soundtransit.org
RAbuseRef:    https://rdap.arin.net/registry/entity/MARTI3425-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" : "33553",
    "as_handle" : "AS33553",
    "as_name" : "SOUNDTRANSIT",
    "admin_contacts" : [ "MARTI3425-ARIN" ],
    "tech_contacts" : [ "MARTI3425-ARIN", "JAMIS95-ARIN", "MARTI3425-ARIN", "NETWO5099-ARIN", "JAMIS95-ARIN", "MARTI3425-ARIN" ],
    "abuse_contacts" : [ "MARTI3425-ARIN", "NETWO5099-ARIN", "MARTI3425-ARIN" ],
    "date_created" : "2012-05-04",
    "date_updated" : "2025-10-02",
    "source" : "https://rdap.arin.net/registry/autnum/33553"
  } ],
  "organization" : {
    "handle" : "CPSRTA",
    "name" : "SOUND TRANSIT",
    "address" : [ "401 S Jackson St", "Seattle", "WA", "98104", "US" ],
    "street" : "S Jackson St",
    "city" : "Seattle",
    "state" : "WA",
    "zip_code" : "98104",
    "country" : [ "US" ],
    "date_created" : "2012-04-27",
    "date_updated" : "2025-10-09",
    "source" : "https://rdap.arin.net/registry/entity/CPSRTA",
    "addressCountry" : "US"
  },
  "administrative_contacts" : [ {
    "handle" : "MARTI3425-ARIN",
    "name" : "Martinson, Tom",
    "email" : [ "tom.martinson@soundtransit.org" ],
    "phone" : [ "+1-206-689-4862" ],
    "source" : "https://rdap.arin.net/registry/entity/MARTI3425-ARIN"
  } ],
  "technical_contacts" : [ {
    "handle" : "MARTI3425-ARIN",
    "name" : "Martinson, Tom",
    "email" : [ "tom.martinson@soundtransit.org" ],
    "phone" : [ "+1-206-689-4862" ],
    "source" : "https://rdap.arin.net/registry/entity/MARTI3425-ARIN"
  }, {
    "handle" : "JAMIS95-ARIN",
    "name" : "Jamison, Stuart",
    "email" : [ "stuart.jamison@soundtransit.org" ],
    "phone" : [ "+1-206-398-5117" ],
    "source" : "https://rdap.arin.net/registry/entity/JAMIS95-ARIN"
  }, {
    "handle" : "NETWO5099-ARIN",
    "name" : "Network Team",
    "email" : [ "ITNetworkEngineering@soundtransit.org" ],
    "phone" : [ "+1-206-398-5492" ],
    "source" : "https://rdap.arin.net/registry/entity/NETWO5099-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "MARTI3425-ARIN",
    "name" : "Martinson, Tom",
    "email" : [ "tom.martinson@soundtransit.org" ],
    "phone" : [ "+1-206-689-4862" ],
    "source" : "https://rdap.arin.net/registry/entity/MARTI3425-ARIN"
  }, {
    "handle" : "NETWO5099-ARIN",
    "name" : "Network Team",
    "email" : [ "ITNetworkEngineering@soundtransit.org" ],
    "phone" : [ "+1-206-398-5492" ],
    "source" : "https://rdap.arin.net/registry/entity/NETWO5099-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS1000	LINK AMERICAN	US
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS3356	Level 3 Parent, LLC	US