AS16681

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Summary

IP address summary information
Name	Educational Testing Service
Country	United States
Website	host.io/ets.org·ets.org
Hosted domains	0
IPv4 addresses	2,048
IPv6 addresses	0
ASN type	Education
Registry	ARIN
Allocated	26 years ago on May 17, 2000
Updated	1 year ago on Nov 7, 2024

Ranking

#41,296

Overall rank

among 74,815 networks

Traffic

#38,136

Infrastructure

#13,031

#7,425inUnited States

Learn how ASN rankings work

Geolocation

Share of IPv4 footprint per hexagonLessMore

Countries by IPv4 share

United States
100%

Held location over 90 days: 100%
Held location over 1 year: 100%
Median days between moves: 548 days
Geolocation scope: City

How consistently this network's IPs hold their geolocation. Read relative to the network type, not as a quality score.

Activity

A pronounced day/night rhythm — the signature of a consumer/eyeball network whose users sleep at night.

Mon

IP Ranges

Netblock	Company	Num of IPs
144.81.10.0/24	Educational Testing Service	256
144.81.11.0/24	Educational Testing Service	256
144.81.53.0/24	Educational Testing Service	256
144.81.54.0/24	Educational Testing Service	256
144.81.85.0/24	Educational Testing Service	256
144.81.97.0/24	Educational Testing Service	256
144.81.111.0/24	Educational Testing Service	256
144.81.127.0/24	Educational Testing Service	256

IP Ranges

WHOIS


  ASHandle:       █████
  OrgID:          █████
  ASName:         ██████
  ASNumber:       AS█████
  RegDate:        ████-██-██
  Updated:        ████-██-██
  TechHandle:     ████-████
  Source:         ████

Hosted Domains

There are 0 domain names hosted across 0 IP addresses on this ASN.

No domains found.

Places

Peers

There are 2 peers for this ASN.

ASN	Name	Rank
AS701	Verizon Business
AS7018	AT&T Enterprises, LLC

Upstreams

There are 2 upstreams for this ASN.

ASN	Name	Rank
AS701	Verizon Business
AS7018	AT&T Enterprises, LLC

Downstreams

There are 0 downstreams for this ASN.

No downstreams found.

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
50.221.204.201 Ping	AS7922Comcast Cable Communications, LLC	7.72ms from Atlanta, US
118.24.126.73 Ping	AS45090Shenzhen Tencent Computer Systems Company Limited	0.85ms from Chengdu, CN
38.123.84.41 Ping	AS11597Mercury Broadband	5.27ms from Chicago, US
34.10.23.89 Ping	AS396982Google LLC	0.38ms from Council Bluffs, US
51.199.105.121 Ping	AS5607Sky UK Limited	1.03ms from Dublin, IE
119.65.109.233 Ping	AS17858LG POWERCOMM	1.42ms from Incheon, KR
86.54.106.25 Ping	AS8851GCI Network Solutions Limited	0.37ms from London, GB
75.82.201.73 Ping	AS20001Charter Communications Inc	4.87ms from Los Angeles, US
69.74.74.169 Ping	AS54004Cablevision Lightpath LLC	1.49ms from Morris Plains, US
1.6.24.105 Ping	AS9583Sify Limited	0.62ms from Mumbai, IN

Pingable IPs

Important routers in AS16681


144.81.85.6	Princeton, United States
144.81.85.2	Princeton, United States

Important routers in AS16681

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 -m10 144.81.54.18

traceroute to 144.81.54.18 (144.81.54.18): 10 hops max, 52 byte packets

3 [AS3257] 72.29.196.13 1.238 ms

4 [AS3257] 89.149.181.102 0.635 ms

5 [AS701] 157.130.245.181 0.359 ms

6 [] 140.222.2.77 63.179 ms

7 [AS701] 152.186.240.230 73.968 ms

8 *

9 *

10 *

Measurement taken from

IPinfo ProbeNet in Los Angeles, US

On October 9, 2026

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 AS16681 at robtex.

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AS16681

Summary

Ranking

Geolocation

Countries by IPv4 share

Activity

IP Ranges

IP Ranges

WHOIS

Hosted Domains

Places

Peers

Upstreams

Downstreams

Pingable IPs

Other Pingable IPs

Pingable IPs

Important routers in AS16681

Important routers in AS16681

Traceroute

Related Networks

AS14883

AS18476

AS26673

AS270

AS27549

What is an ASN?

An API built with users in mind: reliable, accurate, and easy-to-use

Our IP tools

What is my IP?

Map IPs

Summarize IPs

Pingable IPs

Other Pingable IPs

Traceroute

Ranking

IP Ranges

Important routers in AS16681

Geolocation

Countries by IPv4 share

Activity

AS14883

AS18476

AS26673

AS270

AS27549

AS395757