ASN AS4953 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS4953?

AS4953 is listed under Baltimore County Public Library.

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?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS4953 Baltimore County Public Library

ASN Lookup Tool

Search ASN

AS Data

IP Routes

Raw Whois

Parsed Whois

Peers

Upstreams

Downstreams

Legacy Routes

Baltimore County Public Library baltimorecountymd.gov

US 0 Routes

AS Data

AS4953

AS4953 – Baltimore County Public Library

AS Number	4953
AS Name	BCPL
Organization	Baltimore County Public Library(bcpl)
Country	US
Website	baltimorecountymd.gov
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	1995-05-15

ASN Intelligence API for production workflows

Use ASN data for AS4953 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

Get ASN API Key ASN API Docs

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:       4953
ASName:         BCPL
ASHandle:       AS4953
RegDate:        1995-05-15
Updated:        2021-08-20    
Ref:            https://rdap.arin.net/registry/autnum/4953


OrgName:        Baltimore County Public Library
OrgId:          BCPL
Address:        Network Operations
Address:        320 York Road
City:           Towson
StateProv:      MD
PostalCode:     21204
Country:        US
RegDate:        1995-05-01
Updated:        2021-08-20
Ref:            https://rdap.arin.net/registry/entity/BCPL


OrgNOCHandle: NSM12-ARIN
OrgNOCName:   Network and Systems Manager
OrgNOCPhone:  +1-410-887-8200 
OrgNOCEmail:  servicedesk@baltimorecountymd.gov
OrgNOCRef:    https://rdap.arin.net/registry/entity/NSM12-ARIN

OrgTechHandle: NSM12-ARIN
OrgTechName:   Network and Systems Manager
OrgTechPhone:  +1-410-887-8200 
OrgTechEmail:  servicedesk@baltimorecountymd.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/NSM12-ARIN

OrgRoutingHandle: NSM12-ARIN
OrgRoutingName:   Network and Systems Manager
OrgRoutingPhone:  +1-410-887-8200 
OrgRoutingEmail:  servicedesk@baltimorecountymd.gov
OrgRoutingRef:    https://rdap.arin.net/registry/entity/NSM12-ARIN

OrgAbuseHandle: NSM12-ARIN
OrgAbuseName:   Network and Systems Manager
OrgAbusePhone:  +1-410-887-8200 
OrgAbuseEmail:  servicedesk@baltimorecountymd.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NSM12-ARIN

OrgDNSHandle: NSM12-ARIN
OrgDNSName:   Network and Systems Manager
OrgDNSPhone:  +1-410-887-8200 
OrgDNSEmail:  servicedesk@baltimorecountymd.gov
OrgDNSRef:    https://rdap.arin.net/registry/entity/NSM12-ARIN

RTechHandle: NSM12-ARIN
RTechName:   Network and Systems Manager
RTechPhone:  +1-410-887-8200 
RTechEmail:  servicedesk@baltimorecountymd.gov
RTechRef:    https://rdap.arin.net/registry/entity/NSM12-ARIN

RAbuseHandle: NSM12-ARIN
RAbuseName:   Network and Systems Manager
RAbusePhone:  +1-410-887-8200 
RAbuseEmail:  servicedesk@baltimorecountymd.gov
RAbuseRef:    https://rdap.arin.net/registry/entity/NSM12-ARIN

RNOCHandle: NSM12-ARIN
RNOCName:   Network and Systems Manager
RNOCPhone:  +1-410-887-8200 
RNOCEmail:  servicedesk@baltimorecountymd.gov
RNOCRef:    https://rdap.arin.net/registry/entity/NSM12-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.
#

ASN Lookup Tool

ASN Summary

AS4953 – Baltimore County Public Library

ASN Intelligence API for production workflows

Raw Whois Response

Parsed Whois Response

Ready to get started?Get Started with IP Intelligence API Today

Frequently Asked Questions