AS49

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Summary

IP address summary information
Name	National Institute of Standards and Technology
Country	United States
Website	host.io/nist.gov·nist.gov
Hosted domains	4
IPv4 addresses	65,536
IPv6 addresses	2.48 × 10²⁷
ASN type	Government
Registry	ARIN
Allocated	41 years ago on Sep 4, 1985
Updated	2 years ago on Sep 11, 2024

Ranking

#20,539

Overall rank

among 74,654 networks

Traffic

#13,066

Infrastructure

#13,007

#3,345inUnited 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: 0 days
Geolocation scope: National

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
129.6.128.0/17	National Institute of Standards and Technology	32,768
129.6.64.0/18	National Institute of Standards and Technology	16,384
129.6.0.0/21	National Institute of Standards and Technology	2,048
129.6.16.0/21	National Institute of Standards and Technology	2,048
129.6.40.0/21	National Institute of Standards and Technology	2,048
129.6.56.0/21	National Institute of Standards and Technology	2,048
129.6.8.0/22	National Institute of Standards and Technology	1,024
129.6.24.0/22	National Institute of Standards and Technology	1,024
129.6.32.0/22	National Institute of Standards and Technology	1,024
129.6.52.0/22	National Institute of Standards and Technology	1,024

IP Ranges

WHOIS


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

Hosted Domains

There are 4 domain names hosted across 6 IP addresses on this ASN.

IP Address	Domain	Count
129.6.29.6		3
129.6.29.9		2
129.6.29.10		2
129.6.29.7		2
129.6.29.8		2

Places

Peers

There are 3 peers for this ASN.

ASN	Name	Rank
AS3356	Level 3 Parent, LLC
AS3477	National Oceanic and Atmospheric Administration
AS13335	Cloudflare, Inc.

Upstreams

There are 3 upstreams for this ASN.

ASN	Name	Rank
AS3356	Level 3 Parent, LLC
AS3477	National Oceanic and Atmospheric Administration
AS13335	Cloudflare, Inc.

Downstreams

There are 0 downstreams for this ASN.

No downstreams found.

Pingable IPs

20 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more

IP Address	ASN	Details
2610:20:6002:2092::93 Ping	AS49National Institute of Standards and Technology	2.22ms from Ashburn, US
129.6.12.132 Ping	AS49National Institute of Standards and Technology	1.74ms from Ashburn, US
2610:20:6f15:15::25 Ping	AS49National Institute of Standards and Technology	8.58ms from New York City, US
2610:20:6f97:97::6 Ping	AS49National Institute of Standards and Technology	3.30ms from Denver, US
2610:20:6fcd::480:d Ping	AS49National Institute of Standards and Technology	0.10ms from Lima, PE
2610:20:6f96:96::6 Ping	AS49National Institute of Standards and Technology	3.37ms from Denver, US
2610:20:6fcf:14b::2c0:f Ping	AS49National Institute of Standards and Technology	0.15ms from Johannesburg, ZA
132.163.97.254 Ping	AS49National Institute of Standards and Technology	3.22ms from Denver, US
132.163.96.2 Ping	AS49National Institute of Standards and Technology	3.21ms from Denver, US
2610:20:6fce:60fb::162:21d Ping	AS49National Institute of Standards and Technology	0.37ms from Ashburn, US

Other Pingable IPs

IP Address	ASN	Details

Pingable IPs

Important routers in AS49


129.6.14.89	Ashburn, United States
129.6.6.253	Ashburn, United States
129.6.5.253	Ashburn, United States
129.6.14.90	Gaithersburg, United States
129.6.12.129	Gaithersburg, United States
129.6.14.142	Gaithersburg, United States
2610:20:6001:2088::89	Ashburn, United States
129.6.14.38	Gaithersburg, United States
129.6.14.94	Ashburn, United States
129.6.5.154	Ashburn, United States

Important routers in AS49

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 -m21 129.6.32.196

traceroute to 129.6.32.196 (129.6.32.196): 21 hops max, 52 byte packets

3 [AS174] 154.24.39.37 0.934 ms

4 [AS174] 154.54.90.53 2.824 ms

5 [AS174] 154.54.88.78 4.28 ms

6 [AS174] 154.54.173.98 16.353 ms

7 [AS174] 154.54.87.37 16.679 ms

8 [AS174] 154.24.19.101 17.735 ms

9 [AS174] 38.140.232.249 17.333 ms

10 [AS10886] 206.196.191.88 22.867 ms

11 [AS10886] 206.196.191.45 22.579 ms

12 [AS10886] 206.196.177.139 20.23 ms

13 [AS3477] 140.208.253.10 20.12 ms

14 [AS3477] 140.172.71.250 23.06 ms

15 [AS3477] 140.172.71.137 21.708 ms

16 [AS49] 129.6.14.90 25.13 ms

17 [AS49] 129.6.14.89 21.687 ms

18 [AS49] 129.6.5.253 21.402 ms

19 *

20 *

21 *

Measurement taken from

IPinfo ProbeNet in Detroit, US

On September 17, 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 AS49 at robtex.

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AS49

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 AS49

Important routers in AS49

Traceroute

Related Networks

AS10665

AS12183

AS19222

AS26187

AS32799

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

Traceroute

Ranking

Important routers in AS49

Geolocation

Countries by IPv4 share

Pingable IPs

Other Pingable IPs

Activity

IP Ranges

AS10665

AS12183

AS19222

AS26187

AS32799

AS396547