Skip to main content
Access unlimited lookups, API and downloads, data enrichment, and Probenet Live.
Get started for free
Summary IP address summary information Name
First City Internet, LLC Country
Website
Hosted domains
13 IPv4 addresses
2,048 IPv6 addresses
9.67 × 1024 ASN type
ISP Registry
ARIN Allocated
25 years ago on Jan 22, 2001 Updated
4 years ago on Apr 13, 2022
WHOIS
ASHandle: █████
OrgID: █████
ASName: ██████
ASNumber: AS█████
RegDate: ████-██-██
Updated: ████-██-██
TechHandle: ████-████
Source: ████
Powered by ASN to WHOIS data Important routers in AS19586
What is an ASN? Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.
The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS19586 at robtex .
Products Products
Data Data
Why IPinfo? Why IPinfo?
Resources Resources
Stub AS
Stub AS
Traceroute Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more. Traceroute →
$ traceroute -a -n -q1 -f3 204.15.112.217
traceroute to 204.15.112.217 (204.15.112.217 ): 64 hops max, 52 byte packets
Measurement taken from IPinfo ProbeNet in Atlanta, US
On September 10, 2026
Netblock Company Num of IPs First City Internet, LLC
256 First City Internet, LLC
256 First City Internet, LLC
256 First City Internet, LLC
256 First City Internet, LLC
256 First City Internet, LLC
256 First City Internet, LLC
256 First City Internet, LLC
256
Powered by IP Ranges data
There are 1 peers for this ASN.
ASN Name Rank AS3356 Level 3 Parent, LLC #2
There are 1 upstreams for this ASN.
ASN Name Rank AS3356 Level 3 Parent, LLC #2
There are 0 downstreams for this ASN.
No downstreams found.
Important routers in AS19586 Share of IPv4 footprint per hexagon Less More
Held location over 90 days 69%
Held location over 1 year 72%
Median days between moves 25 days
Geolocation scope National How consistently this network's IPs hold their geolocation. Read relative to the network type, not as a quality score.
There are 13 domain names hosted across 4 IP addresses on this ASN.
Pingable IPs 8 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more
IP Address ASN Details 204.15.112.54 Ping AS19586 First City Internet, LLC #38,252 15.51ms from Dallas, US 208.73.116.202 Ping AS19586 First City Internet, LLC #38,252 15.79ms from Dallas, US 204.15.115.23 Ping AS19586 First City Internet, LLC #38,252 16.15ms from Dallas, US 208.73.117.51 Ping AS19586 First City Internet, LLC #38,252 15.53ms from Dallas, US 208.73.118.101 Ping AS19586 First City Internet, LLC #38,252 15.66ms from Dallas, US 204.15.113.1 Ping AS19586 First City Internet, LLC #38,252 16.37ms from Dallas, US 204.15.114.124 Ping AS19586 First City Internet, LLC #38,252 15.52ms from Dallas, US 2602:fb8c:0:1::2 Ping AS19586 First City Internet, LLC #38,252 15.52ms from Dallas, US
Activity A pronounced day/night rhythm — the signature of a consumer/eyeball network whose users sleep at night.
Times shown in United States local time (UTC-6). Less More
Peak hour 08:00–09:00
Active hours 9 hrs (business hours)
Weekend vs weekday weekdays heavier
Busiest day Tue
Network type Consumer ISP
Geography United States 
