ASN Lookup Tool

BUILDERS FIRSTSOURCE, INC. bldr.com US US 0 Routes

AS Data

AS19837

AS19837 – BUILDERS FIRSTSOURCE, INC.

AS Number 19837
AS Name 206-208-88-0
Organization BUILDERS FIRSTSOURCE, INC.(bfs-18)
Country US
Website bldr.com
Number of IPv4 Routes 0
Number of IPv6 Routes 0
ASN type BUSINESS
Registry ARIN
Date Allocated 2025-08-21

ASN Intelligence API for production workflows

Use ASN data for AS19837 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:       19837
ASName:         206-208-88-0
ASHandle:       AS19837
RegDate:        2025-08-21
Updated:        2025-08-21    
Ref:            https://rdap.arin.net/registry/autnum/19837


OrgName:        BUILDERS FIRSTSOURCE, INC.
OrgId:          BFS-18
Address:        6031 Connection Dr Suite 400
City:           Irving
StateProv:      TX
PostalCode:     75039
Country:        US
RegDate:        2000-04-11
Updated:        2025-08-22
Ref:            https://rdap.arin.net/registry/entity/BFS-18


OrgTechHandle: NOC1967-ARIN
OrgTechName:   NOC
OrgTechPhone:  +1-214-231-8200 
OrgTechEmail:  noc@bldr.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NOC1967-ARIN

OrgAbuseHandle: ABUSE1045-ARIN
OrgAbuseName:   ABUSE
OrgAbusePhone:  +1-214-231-8200 
OrgAbuseEmail:  abuse@bldr.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE1045-ARIN

OrgNOCHandle: NOC1967-ARIN
OrgNOCName:   NOC
OrgNOCPhone:  +1-214-231-8200 
OrgNOCEmail:  noc@bldr.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC1967-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

Contacts

Email Contacts

noc@bldr.com

Abuse Contacts

abuse@bldr.com

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

Get Started
CTA Illustration

Frequently Asked Questions

ASN AS19837 is an Autonomous System Number used to identify a network for BGP internet routing.
AS19837 is listed under BUILDERS FIRSTSOURCE, INC..
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
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.