ASN AS18803 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18803?

AS18803 is listed under Tyler Technologies, Inc..

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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AS18803 Tyler Technologies, Inc.

ASN Lookup Tool

Tyler Technologies, Inc. tylertech.com

US 7 Routes

AS Data

AS18803

AS18803 – Tyler Technologies, Inc.

AS Number	18803
AS Name	TYLERTECH-18803
Organization	Tyler Technologies, Inc.(tt-1)
Country	US
Website	tylertech.com
Number of IPv4 Routes	7
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2000-10-12

ASN Intelligence API for production workflows

Use ASN data for AS18803 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
208.64.238.0/24	AS18803	Tyler Technologies, Inc.	Tyler Technologies, Inc.	256
207.245.157.0/24	AS18803	Tyler Technologies, Inc.	Tyler Technologies, Inc.	256
207.245.158.0/24	AS18803	Tyler Technologies, Inc.	Tyler Technologies, Inc.	256
207.245.159.0/24	AS18803	Tyler Technologies, Inc.	Tyler Technologies, Inc.	256
208.64.237.0/24	AS18803	Tyler Technologies, Inc.	Tyler Technologies, Inc.	256
207.245.156.0/24	AS18803	Tyler Technologies, Inc.	Tyler Technologies, Inc.	256
207.245.136.0/24	AS18803	Tyler Technologies, Inc.	Tyler Technologies, Inc.	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:       18803
ASName:         TYLERTECH-18803
ASHandle:       AS18803
RegDate:        2000-10-12
Updated:        2022-05-02
Comment:        http://www.TylerTech.com 
Comment:        NYSE: TYL    
Ref:            https://rdap.arin.net/registry/autnum/18803


OrgName:        Tyler Technologies, Inc.
OrgId:          TT-1
Address:        5101 Tennyson Parkway
City:           Plano
StateProv:      TX
PostalCode:     75024
Country:        US
RegDate:        2011-01-27
Updated:        2024-11-25
Comment:        http://www.TylerTech.com 
Comment:        NYSE: TYL
Ref:            https://rdap.arin.net/registry/entity/TT-1


OrgNOCHandle: TYLER34-ARIN
OrgNOCName:   Tyler NOC
OrgNOCPhone:  +1-972-713-3700 
OrgNOCEmail:  ARINNOC@tylertech.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/TYLER34-ARIN

OrgRoutingHandle: TAT26-ARIN
OrgRoutingName:   Tyler ARIN Tech
OrgRoutingPhone:  +1-972-713-3700 
OrgRoutingEmail:  ARINTech@tylertech.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/TAT26-ARIN

OrgDNSHandle: TAT26-ARIN
OrgDNSName:   Tyler ARIN Tech
OrgDNSPhone:  +1-972-713-3700 
OrgDNSEmail:  ARINTech@tylertech.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/TAT26-ARIN

OrgAbuseHandle: AAATT-ARIN
OrgAbuseName:   ARIN Abuse at Tyler Tech
OrgAbusePhone:  +1-972-713-3700 
OrgAbuseEmail:  ARINAbuse@TylerTech.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/AAATT-ARIN

OrgTechHandle: TAT26-ARIN
OrgTechName:   Tyler ARIN Tech
OrgTechPhone:  +1-972-713-3700 
OrgTechEmail:  ARINTech@tylertech.com
OrgTechRef:    https://rdap.arin.net/registry/entity/TAT26-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

Peers

AS Number	Description	Country
AS11351	Charter Communications Inc	US
AS21547	FirstLight Fiber, Inc.	US

Upstreams

AS Number	Description	Country
AS11351	Charter Communications Inc	US
AS21547	FirstLight Fiber, Inc.	US

Contacts

Email Contacts

ARINTech@tylertech.com

Abuse Contacts

ARINAbuse@TylerTech.com