AS17944

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Summary

IP address summary information
Name	Japan Weather Association
Country	Japan
Website	host.io/jwa.or.jp·jwa.or.jp
Hosted domains	5
IPv4 addresses	65,792
IPv6 addresses	1.21 × 10²⁴
ASN type	Business
Registry	JPNIC
Updated	7 years ago on Feb 14, 2019

Ranking

#24,707

Overall rank

among 74,674 networks

Traffic

#18,479

Infrastructure

#13,015

#323inJapan

Learn how ASN rankings work

Geolocation

Share of IPv4 footprint per hexagonLessMore

Countries by IPv4 share

Japan
100%

Held location over 90 days: 94%
Held location over 1 year: 87%
Median days between moves: 117 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 visible day/night rhythm, consistent with an access network carrying human traffic.

Mon

IP Ranges

Netblock	Company	Num of IPs
133.105.0.0/16	Japan Weather Association	65,536
133.105.0.0/17	Japan Weather Association	32,768
133.105.128.0/17	Japan Weather Association	32,768
133.105.160.0/23	Japan Weather Association	512
192.51.39.0/24	Japan Weather Association	256

IP Ranges

WHOIS


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

Hosted Domains

There are 5 domain names hosted across 5 IP addresses on this ASN.

IP Address	Domain	Count
133.105.13.142		1
133.105.11.86		1
133.105.13.40		1
133.105.13.155		1
133.105.10.192		1

Places

Peers

There are 4 peers for this ASN.

ASN	Name	Rank
AS2497	Internet Initiative Japan Inc.
AS2519	ARTERIA Networks Corporation
AS2907	Research Organization of Information and Systems, National Institute of Informatics
AS8220	COLT Technology Services Group Limited

Upstreams

There are 3 upstreams for this ASN.

ASN	Name	Rank
AS2497	Internet Initiative Japan Inc.
AS2519	ARTERIA Networks Corporation
AS8220	COLT Technology Services Group Limited

Downstreams

There are 0 downstreams for this ASN.

No downstreams found.

Pingable IPs

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

IP Address	ASN	Details
133.105.13.46 Ping	AS17944Japan Weather Association	0.45ms from Tokyo, JP
133.105.10.140 Ping	AS17944Japan Weather Association	0.28ms from Tokyo, JP
133.105.160.20 Ping	AS17944Japan Weather Association	8.70ms from Osaka, JP
133.105.11.9 Ping	AS17944Japan Weather Association	0.40ms from Tokyo, JP
133.105.8.102 Ping	AS17944Japan Weather Association	0.23ms from Tokyo, JP
192.51.39.16 Ping	AS17944Japan Weather Association	1.11ms from Osaka, JP
2001:df0:2ca:2::65 Ping	AS17944Japan Weather Association	0.27ms from Tokyo, JP
133.105.12.2 Ping	AS17944Japan Weather Association	0.26ms from Tokyo, JP

Other Pingable IPs

IP Address	ASN	Details

Pingable IPs

Important routers in AS17944


133.105.8.66	Tokyo, Japan
133.105.8.100	Tokyo, Japan
133.105.8.30	Tokyo, Japan
133.105.8.131	Osaka, Japan

Important routers in AS17944

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 -m21 133.105.201.211

traceroute to 133.105.201.211 (133.105.201.211): 21 hops max, 52 byte packets

2 [AS50293] 193.39.195.73 62.54 ms

3 [AS174] 149.6.145.1 65.165 ms

4 [AS174] 154.54.61.214 68.983 ms

5 [AS174] 154.54.61.101 81.659 ms

6 [AS174] 154.54.47.137 154.422 ms

7 [AS174] 154.54.169.178 171.509 ms

8 [AS174] 154.54.29.134 178.035 ms

9 [AS174] 154.54.40.249 185.895 ms

10 [AS174] 154.54.165.26 196.916 ms

11 [AS174] 154.54.166.58 205.925 ms

12 [AS174] 154.54.44.86 215.903 ms

13 [AS174] 154.54.27.118 215.985 ms

14 [AS174] 38.104.84.75 202.044 ms

15 [AS2497] 58.138.88.253 352.994 ms

16 [AS2497] 58.138.112.234 352.129 ms

17 [AS2497] 58.138.112.198 351.73 ms

18 [AS2497] 210.138.133.174 352.708 ms

19 *

20 *

21 *

Measurement taken from

IPinfo ProbeNet in Abidjan, CI

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 AS17944 at robtex.

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AS17944

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 AS17944

Important routers in AS17944

Traceroute

Related Networks

AS131078

AS138328

AS17700

AS18071

AS23803

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

IP Ranges

Important routers in AS17944

Geolocation

Countries by IPv4 share

Pingable IPs

Other Pingable IPs

Activity

AS131078

AS138328

AS17700

AS18071

AS23803

AS24272