ASN AS18674 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18674?

AS18674 is listed under Frost Bank.

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.

AS18674 Frost Bank | IPGeolocation.io

ASN Lookup Tool

Frost Bank frostbank.com

US 5 Routes

AS Data

AS18674

AS18674 – Frost Bank

AS Number	18674
AS Name	FROST-BANK
Organization	Frost Bank (fnb-19)
Country	US
Website	frostbank.com
Number of IPv4 Routes	5
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2000-09-27

ASN Intelligence API for production workflows

Use ASN data for AS18674 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
66.136.40.0/24	AS18674	Frost Bank	Frost National Bank	256
64.190.2.0/24	AS18674	Frost Bank	Frost Bank	256
216.247.77.0/24	AS18674	Frost Bank	Frost Bank	256
209.184.178.0/24	AS18674	Frost Bank	Frost National Bank	256
75.11.242.0/24	AS18674	Frost Bank	Frost National Bank	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:       18674
ASName:         FROST-BANK
ASHandle:       AS18674
RegDate:        2000-09-27
Updated:        2021-07-12
Ref:            https://rdap.arin.net/registry/autnum/18674


OrgName:        Frost Bank
OrgId:          FNB-19
Address:        3838 Rogers Rd
City:           San Antonio
StateProv:      TX
PostalCode:     78251
Country:        US
RegDate:        2000-09-27
Updated:        2021-12-15
Ref:            https://rdap.arin.net/registry/entity/FNB-19


OrgTechHandle: NTS24-ARIN
OrgTechName:   Network Transport Services
OrgTechPhone:  +1-210-220-5910 
OrgTechEmail:  networktransportservices@frostbank.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NTS24-ARIN

OrgAbuseHandle: NTS24-ARIN
OrgAbuseName:   Network Transport Services
OrgAbusePhone:  +1-210-220-5910 
OrgAbuseEmail:  networktransportservices@frostbank.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NTS24-ARIN

RAbuseHandle: NTS24-ARIN
RAbuseName:   Network Transport Services
RAbusePhone:  +1-210-220-5910 
RAbuseEmail:  networktransportservices@frostbank.com
RAbuseRef:    https://rdap.arin.net/registry/entity/NTS24-ARIN

RNOCHandle: NTS24-ARIN
RNOCName:   Network Transport Services
RNOCPhone:  +1-210-220-5910 
RNOCEmail:  networktransportservices@frostbank.com
RNOCRef:    https://rdap.arin.net/registry/entity/NTS24-ARIN

RTechHandle: NTS24-ARIN
RTechName:   Network Transport Services
RTechPhone:  +1-210-220-5910 
RTechEmail:  networktransportservices@frostbank.com
RTechRef:    https://rdap.arin.net/registry/entity/NTS24-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" : "18674",
    "as_handle" : "AS18674",
    "as_name" : "FROST-BANK",
    "tech_contacts" : [ "NTS24-ARIN", "NTS24-ARIN" ],
    "abuse_contacts" : [ "NTS24-ARIN", "NTS24-ARIN" ],
    "date_created" : "2000-09-27",
    "date_updated" : "2021-07-12",
    "source" : "https://rdap.arin.net/registry/autnum/18674"
  } ],
  "organization" : {
    "handle" : "FNB-19",
    "name" : "Frost Bank",
    "address" : [ "3838 Rogers Rd", "San Antonio", "TX", "78251", "US" ],
    "street" : "Rogers Rd",
    "city" : "San Antonio",
    "state" : "TX",
    "zip_code" : "78251",
    "country" : [ "US" ],
    "date_created" : "2000-09-27",
    "date_updated" : "2021-12-15",
    "source" : "https://rdap.arin.net/registry/entity/FNB-19",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "NTS24-ARIN",
    "name" : "Network Transport Services",
    "email" : [ "networktransportservices@frostbank.com" ],
    "phone" : [ "+1-210-220-5910" ],
    "source" : "https://rdap.arin.net/registry/entity/NTS24-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "NTS24-ARIN",
    "name" : "Network Transport Services",
    "email" : [ "networktransportservices@frostbank.com" ],
    "phone" : [ "+1-210-220-5910" ],
    "source" : "https://rdap.arin.net/registry/entity/NTS24-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US
AS6939	Hurricane Electric LLC	US
AS19551	Incapsula Inc	US
AS11427	Charter Communications Inc	US

Upstreams

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US
AS6939	Hurricane Electric LLC	US
AS19551	Incapsula Inc	US
AS11427	Charter Communications Inc	US