ASN AS53579 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS53579?

AS53579 is listed under The Free Library of Philadelphia.

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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AS53579 The Free Library of Philadelphia

ASN Lookup Tool

The Free Library of Philadelphia freelibrary.org

US 1 Routes

AS Data

AS53579

AS53579 – The Free Library of Philadelphia

AS Number	53579
AS Name	FLP-5
Organization	The Free Library of Philadelphia (flp-5)
Country	US
Website	freelibrary.org
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	2010-06-22

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Use ASN data for AS53579 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
131.239.6.0/24	AS53579	The Free Library of Philadelphia	Free Library of Philadelphia	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:       53579
ASName:         FLP-5
ASHandle:       AS53579
RegDate:        2010-06-22
Updated:        2012-02-24
Ref:            https://rdap.arin.net/registry/autnum/53579


OrgName:        The Free Library of Philadelphia
OrgId:          FLP-5
Address:        1901 Vine Street
City:           Philadelphia
StateProv:      PA
PostalCode:     19103
Country:        US
RegDate:        2010-06-04
Updated:        2011-09-24
Ref:            https://rdap.arin.net/registry/entity/FLP-5


OrgAbuseHandle: JDW26-ARIN
OrgAbuseName:   Wynder, John D.
OrgAbusePhone:  +1-215-686-5297 
OrgAbuseEmail:  wynderj@freelibrary.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/JDW26-ARIN

OrgTechHandle: GF275-ARIN
OrgTechName:   Falkowski, Glenn 
OrgTechPhone:  +1-908-486-8621 
OrgTechEmail:  glennf@glen.com
OrgTechRef:    https://rdap.arin.net/registry/entity/GF275-ARIN

OrgAbuseHandle: GF275-ARIN
OrgAbuseName:   Falkowski, Glenn 
OrgAbusePhone:  +1-908-486-8621 
OrgAbuseEmail:  glennf@glen.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/GF275-ARIN

OrgTechHandle: JDW26-ARIN
OrgTechName:   Wynder, John D.
OrgTechPhone:  +1-215-686-5297 
OrgTechEmail:  wynderj@freelibrary.org
OrgTechRef:    https://rdap.arin.net/registry/entity/JDW26-ARIN

RNOCHandle: JDW26-ARIN
RNOCName:   Wynder, John D.
RNOCPhone:  +1-215-686-5297 
RNOCEmail:  wynderj@freelibrary.org
RNOCRef:    https://rdap.arin.net/registry/entity/JDW26-ARIN

RAbuseHandle: JDW26-ARIN
RAbuseName:   Wynder, John D.
RAbusePhone:  +1-215-686-5297 
RAbuseEmail:  wynderj@freelibrary.org
RAbuseRef:    https://rdap.arin.net/registry/entity/JDW26-ARIN

RTechHandle: JDW26-ARIN
RTechName:   Wynder, John D.
RTechPhone:  +1-215-686-5297 
RTechEmail:  wynderj@freelibrary.org
RTechRef:    https://rdap.arin.net/registry/entity/JDW26-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" : "53579",
    "as_handle" : "AS53579",
    "as_name" : "FLP-5",
    "tech_contacts" : [ "GF275-ARIN", "JDW26-ARIN", "JDW26-ARIN" ],
    "abuse_contacts" : [ "JDW26-ARIN", "GF275-ARIN", "JDW26-ARIN" ],
    "date_created" : "2010-06-22",
    "date_updated" : "2012-02-24",
    "source" : "https://rdap.arin.net/registry/autnum/53579"
  } ],
  "organization" : {
    "handle" : "FLP-5",
    "name" : "The Free Library of Philadelphia",
    "address" : [ "1901 Vine Street", "Philadelphia", "PA", "19103", "US" ],
    "street" : "Vine Street",
    "city" : "Philadelphia",
    "state" : "PA",
    "zip_code" : "19103",
    "country" : [ "US" ],
    "date_created" : "2010-06-04",
    "date_updated" : "2011-09-24",
    "source" : "https://rdap.arin.net/registry/entity/FLP-5",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "GF275-ARIN",
    "name" : "Falkowski, Glenn",
    "email" : [ "glennf@glen.com" ],
    "phone" : [ "+1-908-486-8621" ],
    "source" : "https://rdap.arin.net/registry/entity/GF275-ARIN"
  }, {
    "handle" : "JDW26-ARIN",
    "name" : "Wynder, John D.",
    "email" : [ "wynderj@freelibrary.org" ],
    "phone" : [ "+1-215-686-5297" ],
    "source" : "https://rdap.arin.net/registry/entity/JDW26-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "JDW26-ARIN",
    "name" : "Wynder, John D.",
    "email" : [ "wynderj@freelibrary.org" ],
    "phone" : [ "+1-215-686-5297" ],
    "source" : "https://rdap.arin.net/registry/entity/JDW26-ARIN"
  }, {
    "handle" : "GF275-ARIN",
    "name" : "Falkowski, Glenn",
    "email" : [ "glennf@glen.com" ],
    "phone" : [ "+1-908-486-8621" ],
    "source" : "https://rdap.arin.net/registry/entity/GF275-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US

Upstreams

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US