202.251.0.0/19

AS2497 · Internet Initiative Japan Inc.

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Summary

Country	Japan
Domain
ASN	AS2497
Registry	JPNIC
ID	CTIE-NET-CIDR-BLK-JP

WHOIS Details

inetnum:        202.251.0.0 - 202.251.31.255
netname:        CTIE-NET-CIDR-BLK-JP
descr:          CTI Engineering Co.Ltd.
country:        JP
admin-c:        HS150JP
tech-c:         HS150JP
last-modified:  2019-03-01T01:08:07Z
remarks:        This information has been partially mirrored by APNIC from
remarks:        JPNIC. To obtain more specific information, please use the
remarks:        JPNIC WHOIS Gateway at
remarks:        http://www.nic.ad.jp/en/db/whois/en-gateway.html or
remarks:        whois.nic.ad.jp for WHOIS client. (The WHOIS client
remarks:        defaults to Japanese output, use the /e switch for English
remarks:        output)
source:         JPNIC

Nearby Ranges

BGP prefixes that overlap with 202.251.0.0/16

Range	ASN	Company	Num of IPs
202.251.144.0/20	AS23781	National University Corporation, University of Toyama	4,096
202.251.224.0/20	AS2907	Fukushima Medical University	4,096
202.251.184.0/21	AS2907	The Tohoku University of Art and Design	2,048
202.251.248.0/22	AS4686	BEKKOAME INTERNET ,Inc.	1,024
202.251.244.0/22	AS2907	National Fisheries University	1,024
202.251.32.0/22	AS2907	National Institute of Technology, Japan	1,024
202.251.88.0/22	AS2907	National Institute of Technology, Japan	1,024
202.251.200.0/22	AS2497	Kitasato University	1,024
202.251.180.0/22	AS2907	University Of Fukui	1,024
202.251.177.0/24	AS3488	Information Systems Department, Japan Aerospace Exploration Agency	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Pingable IPs

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

IP Address	ASN	Details
202.251.0.1	AS2497 Internet Initiative Japan Inc.	`1.25ms` from Tokyo, JP

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
68.33.53.243	AS7922 Comcast Cable Communications, LLC	`7.43ms` from Ashburn, US
77.49.235.131	AS1241 Forthnet	`1.82ms` from Athens, GR
147.95.2.3	AS8762 Hellenic Mediterranean University	`7.59ms` from Athens, GR
78.92.58.179	AS5483 Magyar Telekom Plc.	`4.57ms` from Budapest, HU
118.122.40.67	AS4134 CHINANET-BACKBONE	`6.46ms` from Chengdu, CN
67.163.5.67	AS7922 Comcast Cable Communications, LLC	`6.54ms` from Chicago, US
66.69.191.51	AS11427 Charter Communications Inc	`6.86ms` from Dallas, US
18.202.113.99	AS16509 Amazon.com, Inc.	`0.17ms` from Dublin, IE
217.92.85.243	AS3320 Deutsche Telekom AG	`6.41ms` from Frankfurt am Main, DE
47.110.230.195	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.29ms` from Hangzhou, CN
68.206.140.243	AS11427 Charter Communications Inc	`12.71ms` from Houston, US
73.245.211.83	AS7922 Comcast Cable Communications, LLC	`4.94ms` from Miami, US
88.40.159.35	AS3269 Telecom Italia S.p.A.	`3.31ms` from Milan, IT
188.8.63.163	AS3269 Telecom Italia S.p.A.	`1.99ms` from Milan, IT
3.233.22.19	AS14618 Amazon.com, Inc.	`0.15ms` from Reston, US
1.161.112.3	AS3462 Data Communication Business Group	`0.74ms` from Taipei, TW
145.137.87.163	AS1103 SURF B.V.	`6.00ms` from The Hague, NL
133.201.57.131	AS2518 BIGLOBE Inc.	`4.47ms` from Tokyo, JP
153.204.171.19	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.42ms` from Tokyo, JP
61.201.212.3	AS4725 SoftBank Corp.	`6.35ms` from Tokyo, JP
59.82.29.67	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.19ms` from Zhangjiakou, CN
139.45.215.3	AS51327 RETN AM Limited Liability Company	`0.97ms` from Abovyan, AM
31.25.98.3	AS48635 Your Hosting B.V.	`0.28ms` from Amsterdam, NL
128.186.171.67	AS2553 Florida State University	`10.37ms` from Atlanta, US
84.130.5.83	AS3320 Deutsche Telekom AG	`4.85ms` from Frankfurt am Main, DE

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f5 -m11 202.251.20.45

traceroute to 202.251.20.45 (202.251.20.45): 11 hops max, 52 byte packets

5 [AS2497] 216.98.106.133 92.199 ms

6 [AS2497] 58.138.81.85 170.308 ms

7 [AS2497] 58.138.88.233 240.592 ms

8 [AS2497] 58.138.85.142 239.424 ms

9 *

10 *

11 *

Measurement taken from

IPinfo ProbeNet in Quito, EC

On December 14th 2025

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