211.76.240.0/20

AS18185 · NTCU

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Summary

Country	Taiwan
Domain	nctu.edu.tw
ASN	AS18185
Registry	APNIC
ID	TWNCTU-NET

WHOIS Details

inetnum:        211.76.240.0 - 211.76.255.255
netname:        TWNCTU-NET
descr:          National Chiao Tung University
descr:          1001 University Road, Hsinchu,
descr:          Taiwan 30010
country:        TW
admin-c:        YK1273-AP
tech-c:         YK1274-AP
abuse-c:        AT939-AP
status:         ALLOCATED PORTABLE
mnt-by:         MAINT-TW-TWNIC
mnt-irt:        IRT-TWNCTU-TW
last-modified:  2025-11-07T02:33:18Z
source:         APNIC

irt:            IRT-TWNCTU-TW
address:        National Yang Ming Chiao Tung University
address:        1001, Ta Hsueh Road
address:        Hsinchu
phone:          +886-3-5712121
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        TR593-AP
tech-c:         TR593-AP
remarks:        (oid:TWNCTU)
mnt-by:         MAINT-TW-TWNIC
last-modified:  2025-11-06T07:53:20Z
source:         APNIC
auth:           # Filtered

role:           ABUSE TWNICAP
country:        ZZ
address:        3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan
phone:          +000000000
e-mail:         [email protected]
admin-c:        TWA2-AP
tech-c:         TWA2-AP
nic-hdl:        AT939-AP
remarks:        Generated from irt object IRT-TWNIC-AP
remarks:        [email protected] was validated on 2025-05-23
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2025-05-23T00:02:10Z
source:         APNIC

person:         Yi-Chih Kao
address:        1001 University Road, Hsinchu, Taiwan 30010
country:        TW
phone:          +8863-5731905
e-mail:         [email protected]
nic-hdl:        YK1273-AP
mnt-by:         MAINT-TW-TWNIC
last-modified:  2020-05-29T00:38:56Z
source:         APNIC

person:         Yi-Quan Ke
address:        1001 University Road, Hsinchu, Taiwan 30010
country:        TW
phone:          +8863-5731706
e-mail:         [email protected]
nic-hdl:        YK1274-AP
mnt-by:         MAINT-TW-TWNIC
last-modified:  2020-05-29T00:39:32Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 211.76.0.0/16

Range	ASN	Company	Num of IPs
211.76.0.0/19	AS7478	Mackay Telecommunications Inc.	8,192
211.76.32.0/19	AS24163	UNION CABLE TV CO.,LTD.	8,192
211.76.32.0/19	AS24164	UNION CABLE TV CO.,LTD.	8,192
211.76.96.0/20	AS17709	Eastern Broadband Telecom Co., Ltd	4,096
211.76.160.0/20	AS18181	135, Keyan Road, Zhunan Town,	4,096
211.76.96.0/20	AS24154	Eastern Broadband Telecom Co., Ltd	4,096
211.76.112.0/20	AS38841	kbro CO. Ltd.	4,096
211.76.128.0/20	AS9216	Symphox Information Co.,Ltd.	4,096
211.76.128.0/20	AS56179	Symphox Information Co.,Ltd.	4,096
211.76.64.0/20	AS24164	UNION BROADBAND NETWORK	4,096
211.76.80.0/20	AS9676	Hualien CATV Corporation	4,096
211.76.64.0/21	AS24164	TFN MEDIA CO., LTD.	2,048
211.76.56.0/22	AS24164	TFN MEDIA CO., LTD.	1,024
211.76.176.0/23	AS131642	Pittqiao Network Information Co.,Ltd.	512
211.76.190.0/23	AS131666	Haosing Technology Co., Ltd.	512
211.76.186.0/23	AS134823	Sky Digital Co., Ltd.	512
211.76.180.0/23	AS18041	Taiwan Digital Streaming Co.	512
211.76.117.0/24	AS38841	kbro CO. Ltd.	256
211.76.118.0/24	AS38841	kbro CO. Ltd.	256
211.76.119.0/24	AS38841	kbro CO. Ltd.	256
211.76.120.0/24	AS38841	kbro CO. Ltd.	256
211.76.125.0/24	AS38841	kbro CO. Ltd.	256
211.76.126.0/24	AS38841	kbro CO. Ltd.	256
211.76.127.0/24	AS38841	kbro CO. Ltd.	256
211.76.116.0/24	AS38841	kbro CO. Ltd.	256
211.76.115.0/24	AS38841	kbro CO. Ltd.	256
211.76.114.0/24	AS38841	kbro CO. Ltd.	256
211.76.112.0/24	AS38841	kbro CO. Ltd.	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
211.76.240.234	AS18185 NTCU	`2.21ms` from Taipei, TW
211.76.253.254	AS18185 NTCU	`2.69ms` from Taipei, TW
211.76.247.123	AS18185 NTCU	`4.93ms` from Taipei, TW
211.76.249.254	AS18185 NTCU	`2.67ms` from Taipei, TW
211.76.246.254	AS18185 NTCU	`2.85ms` from Taipei, TW
211.76.254.254	AS18185 NTCU	`2.60ms` from Taipei, TW
211.76.251.229	AS18185 NTCU	`2.39ms` from Taipei, TW
211.76.245.254	AS18185 NTCU	`2.83ms` from Taipei, TW
211.76.255.222	AS18185 NTCU	`0.69ms` from Taipei, TW

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
54.210.49.4	AS14618 Amazon.com, Inc.	`0.52ms` from Ashburn, US
2.110.83.132	AS203953 Hiper A/S	`5.10ms` from Copenhagen, DK
72.104.76.20	AS6167 Verizon Business	`19.96ms` from Greenwood Village, US
41.181.66.4	AS16637 MTN SA	`1.37ms` from Johannesburg, ZA
84.247.161.20	AS51167 Contabo GmbH	`0.22ms` from Lauterbourg, FR
148.252.202.20	AS42973 M247 UK Ltd	`0.41ms` from Manchester, GB
185.204.119.4	AS205820 Unitary enterprise A1	`1.09ms` from Minsk, BY
46.42.1.68	AS44507 OJSC Kostroma Municipal Telephone Network	`7.11ms` from Moscow, RU
97.101.217.132	AS33363 Charter Communications, Inc	`9.24ms` from Orlando, US
174.49.187.52	AS7922 Comcast Cable Communications, LLC	`19.25ms` from Piscataway, US
74.224.120.4	AS8075 Microsoft Corporation	`0.29ms` from Saint Thomas Mount, IN
216.238.72.116	AS20473 The Constant Company, LLC	`0.15ms` from Santiago de Queretaro, MX
152.166.35.4	AS28118 ALTICE DOMINICANA S.A.	`10.21ms` from Santo Domingo, DO
65.153.190.84	AS209 CenturyLink Communications, LLC	`1.22ms` from Seattle, US
52.79.203.228	AS16509 Amazon.com, Inc.	`0.30ms` from Seoul, KR
119.75.159.164	AS18318 LG HelloVision Corp.	`11.88ms` from Seoul, KR
115.9.215.68	AS4766 Korea Telecom	`6.28ms` from Seoul, KR
61.83.137.36	AS4766 Korea Telecom	`1.82ms` from Seoul, KR
51.68.118.100	AS16276 OVH SAS	`0.06ms` from Strasbourg, FR
34.84.17.52	AS396982 Google LLC	`0.14ms` from Tokyo, JP
201.251.136.4	AS22927 Telefonica de Argentina	`8.90ms` from Buenos Aires, AR
52.17.99.84	AS16509 Amazon.com, Inc.	`0.22ms` from Dublin, IE
188.184.76.84	AS513 CERN - European Organization for Nuclear Research	`1.09ms` from Geneve, CH
122.231.139.20	AS4134 CHINANET-BACKBONE	`5.97ms` from Hangzhou, CN
2.219.109.52	AS5607 Sky UK Limited	`8.22ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -f8 211.76.253.254

traceroute to 211.76.253.254 (211.76.253.254): 64 hops max, 52 byte packets

8 [AS4134] 113.96.5.193 1.97 ms

9 *

10 *

11 [AS4134] 202.97.59.98 35.516 ms

12 [AS4780] 139.175.57.58 165.818 ms

13 [AS4780] 139.175.57.106 183.451 ms

14 [AS4780] 192.72.251.38 164.471 ms

15 [AS18185] 211.76.253.254 164.121 ms

Measurement taken from

IPinfo ProbeNet in Guangzhou, CN

On December 28th 2025

What are IP address ranges?

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