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	10
IPv4 addresses	65,536
IPv6 addresses	2.48 × 10²⁷
ASN type	Government
Registry	ARIN
Allocated	40 years ago on Sep 4, 1985
Updated	1 year ago on Sep 11, 2024

Ranking

#17,982

Overall rank

among 42,371 networks

Traffic

#12,869

Infrastructure

#13,099

#3,034inUnited 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: 1,150 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

Tue

Wed

Thu

Fri

Sat

Sun

Times shown in United States local time (UTC-5).LessMore

Peak hour: 10:00–11:00
Active hours: 12 hrs
Weekend vs weekday: weekdays heavier
Busiest day: Mon
Network type: Government
Geography: United States

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 10 domain names hosted across 8 IP addresses on this ASN.

IP Address	Domain	Count
129.6.13.35		5
129.6.29.6		4
129.6.29.9		3
129.6.29.8		3
129.6.29.7		3

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
2610:20:6fcd:7000::Ping	AS49National Institute of Standards and Technology	0.11ms from Tirana, AL
132.163.96.4 Ping	AS49National Institute of Standards and Technology	3.18ms from Denver, US
129.6.29.177 Ping	AS49National Institute of Standards and Technology	0.11ms from Wrocław, PL
2610:20:6fcf:b::402:34 Ping	AS49National Institute of Standards and Technology	0.39ms from Ashburn, US
132.163.97.3 Ping	AS49National Institute of Standards and Technology	3.16ms from Denver, US
129.6.5.254 Ping	AS49National Institute of Standards and Technology	2.10ms from Ashburn, US
2610:20:6006:6::253 Ping	AS49National Institute of Standards and Technology	3.21ms from Ashburn, US
129.6.92.252 Ping	AS49National Institute of Standards and Technology	2.20ms from Ashburn, US
129.6.6.154 Ping	AS49National Institute of Standards and Technology	2.15ms from Ashburn, US
129.6.14.41 Ping	AS49National Institute of Standards and Technology	2.15ms from Ashburn, US

Other Pingable IPs

IP Address	ASN	Details

Pingable IPs

Important routers in AS49


129.6.14.89	Gaithersburg, United States
129.6.6.253	Gaithersburg, United States
129.6.5.253	Gaithersburg, United States
129.6.14.90	Gaithersburg, United States
129.6.12.129	Gaithersburg, United States
2610:20:6005:5::253	Ashburn, United States
2610:20:6006:6::253	Ashburn, United States
2610:20:6001:2088::89	Ashburn, United States
2610:20:6001:2088::90	Ashburn, United States
129.6.6.154	Gaithersburg, 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 -f2 -m24 129.6.235.119

traceroute to 129.6.235.119 (129.6.235.119): 24 hops max, 52 byte packets

2 [AS5483] 145.236.89.237 3.83 ms

3 [AS5483] 145.236.89.238 1.362 ms

4 [AS5483] 145.236.89.248 0.792 ms

5 [AS3320] 62.159.61.98 4.388 ms

6 [AS3320] 80.156.162.179 4.321 ms

7 [AS1299] 62.115.114.184 33.761 ms

8 [AS1299] 62.115.137.202 34.834 ms

9 [AS1299] 62.115.123.13 41.929 ms

10 [AS1299] 62.115.140.105 103.621 ms

11 [AS1299] 62.115.140.101 103.502 ms

12 [AS1299] 213.248.84.145 104.019 ms

13 [AS10886] 206.196.191.100 105.998 ms

14 [AS10886] 206.196.191.39 106.31 ms

15 [AS10886] 206.196.177.139 104.051 ms

16 [AS3477] 140.208.253.10 104.028 ms

17 [AS3477] 140.172.71.250 105.93 ms

18 [AS3477] 140.172.71.137 106.053 ms

19 [AS49] 129.6.14.90 105.114 ms

20 [AS49] 129.6.14.89 105.082 ms

21 [AS49] 129.6.6.253 106.001 ms

22 *

23 *

24 *

Measurement taken from

IPinfo ProbeNet in Budapest, HU

On July 12, 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.

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

AS11811

AS16972

AS19265

AS1989

AS22655

AS397186

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Ranking

Activity

IP Ranges

Important routers in AS49

AS11811

AS16972

AS19265

AS1989

AS22655

AS397186

Geolocation

Countries by IPv4 share

Traceroute

Pingable IPs

Other Pingable IPs