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Summary IP address summary information Name
Fontana Unified School District Country
Website
Hosted domains
0 IPv4 addresses
512 IPv6 addresses
0 ASN type
Education Registry
ARIN Allocated
5 years ago on Jan 20, 2021 Updated
5 years ago on Jan 20, 2021
WHOIS
ASHandle: █████
OrgID: █████
ASName: ██████
ASNumber: AS█████
RegDate: ████-██-██
Updated: ████-██-██
TechHandle: ████-████
Source: ████
Powered by ASN to WHOIS data Important routers in AS399256
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 AS399256 at robtex .
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Data Data
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Resources Resources
Pingable IPs 0 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more
Other Pingable IPs IP Address ASN Details 5.38.128.40 Ping AS5483 Magyar Telekom Plc. #229 2.72ms from Budapest, HU 3.149.166.248 Ping AS16509 Amazon.com, Inc. #19 0.20ms from Columbus, US 41.83.249.168 Ping AS8346 SONATEL-AS Autonomous System #391 3.77ms from Dakar, SN 159.75.104.88 Ping AS45090 Shenzhen Tencent Computer Systems Company Limited #1,145 1.33ms from Guangzhou, CN 210.56.15.40 Ping AS7590 Commission on Science and Technology for #24,496 3.75ms from Islamabad, PK 45.55.156.120 Ping AS14061 DigitalOcean, LLC #321 0.40ms from New York City, US 43.173.122.8 Ping AS132203 Tencent Building, Kejizhongyi Avenue #1,308 0.58ms from San Jose, US 116.89.37.24 Ping AS55430 Starhub Ltd #298 1.90ms from Singapore, SG 198.182.50.136 Ping AS10209 Japan HUB and Data Center #48,586 1.05ms from Tokyo, JP 18.218.244.56 Ping AS16509 Amazon.com, Inc. #19 0.13ms from Columbus, US
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Traceroute Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more. Traceroute →
$ traceroute -a -n -q1 -m8 208.64.35.107
traceroute to 208.64.35.107 (208.64.35.107 ): 8 hops max, 52 byte packets
Measurement taken from IPinfo ProbeNet in Islamabad, PK
On October 2, 2026
Netblock Company Num of IPs Fontana Unified School District
512 Fontana Unified School District
256 Fontana Unified School District
256
Powered by IP Ranges data
There are 2 peers for this ASN.
ASN Name Rank AS20001 Charter Communications Inc #86 AS46887 Zayo Bandwidth #180
There are 2 upstreams for this ASN.
ASN Name Rank AS20001 Charter Communications Inc #86 AS46887 Zayo Bandwidth #180
There are 0 downstreams for this ASN.
No downstreams found.
Share of IPv4 footprint per hexagon Less More
Held location over 90 days 100%
Held location over 1 year 99%
Median days between moves 186 days
Geolocation scope City How consistently this network's IPs hold their geolocation. Read relative to the network type, not as a quality score.
There are 0 domain names hosted across 0 IP addresses on this ASN.
No domains found.
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-8). Less More
Peak hour 10:00–11:00
Active hours 8 hrs (business hours)
Weekend vs weekday weekdays heavier
Busiest day Fri
Network type Education
Geography United States 
