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Summary

Country	China
Domain	net.edu.cn
ASN	AS38255
Registry	APNIC
ID	FIX-CN

WHOIS Details

inet6num:       2001:255::/32
netname:        FIX-CN
descr:          China Education and Research Network
descr:          Future Internet Technology Infrastructure
descr:          Tsinghua University
country:        CN
org:            ORG-CEAR1-AP
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
notify:         szhu@ocean.net.edu.cn
notify:         xing@ocean.net.edu.cn
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2021-06-01T03:55:21Z
source:         APNIC

irt:            IRT-CERNET-AP
address:        Network Center,
address:        FIT-3-220, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
fax-no:         +86-10-62785933
e-mail:         abuse@cernet.edu.cn
abuse-mailbox:  abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        abuse@cernet.edu.cn was validated on 2026-03-05
mnt-by:         MAINT-CERNET-AP
last-modified:  2026-03-05T06:39:56Z
source:         APNIC

organisation:   ORG-CEAR1-AP
org-name:       China Education and Research Network (CERNET)
country:        CN
address:        FIT 3-220,
address:        Tsinghua University
phone:          +86-10-62785983
fax-no:         +86-10-62785933
e-mail:         hostmaster@cernic.net
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2018-09-13T12:56:34Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Center,
address:        FIT-3-220, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
e-mail:         abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        abuse@cernet.edu.cn was validated on 2026-03-05
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-05T06:40:20Z
source:         APNIC

role:           CERNET Helpdesk
address:        CERNET Center
address:        Beijing 100084, China
country:        CN
phone:          +86-10-6278-4049
fax-no:         +86-10-6278-5933
e-mail:         helpdesk@cernet.edu.cn
remarks:        abuse@cernet.edu.cn
admin-c:        XL1-CN
tech-c:         SZ2-AP
nic-hdl:        CER-AP
mnt-by:         MAINT-CERNET-AP
last-modified:  2020-09-03T09:14:12Z
source:         APNIC

route6:         2001:255::/32
origin:         AS38255
descr:          China Education and Research Network (CERNET) FIT 3-220, Tsinghua University
mnt-by:         MAINT-CERNET-AP
last-modified:  2024-03-13T02:00:28Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 2001:255::/32

No nearby ranges found.

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

Read more

Pingable IPs

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

IP Address	ASN	Details
2001:255:0:100::1002	AS38255 China Education and Research Network (CERNET)	`8.11ms` from Zhangjiakou, CN

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
3.92.141.96	AS14618 Amazon.com, Inc.	`0.55ms` from Ashburn, US
94.191.122.240	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.22ms` from Chongqing, CN
4.223.131.224	AS8075 Microsoft Corporation	`0.18ms` from Gaevle, SE
175.127.200.80	AS9318 SK Broadband Co Ltd	`5.32ms` from Incheon, KR
87.28.17.0	AS3269 Telecom Italia S.p.A.	`2.31ms` from Milan, IT
24.245.29.224	AS7922 Comcast Cable Communications, LLC	`6.41ms` from Minneapolis, US
84.156.67.240	AS3320 Deutsche Telekom AG	`7.61ms` from Nuernberg, DE
39.77.154.32	AS4837 CHINA UNICOM China169 Backbone	`0.75ms` from Qingdao, CN
60.125.8.144	AS17676 SoftBank Corp.	`3.12ms` from Tokyo, JP
178.129.189.176	AS28812 PJSC "Bashinformsvyaz"	`9.14ms` from Yekaterinburg, RU
211.159.173.64	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.77ms` from Beijing, CN
135.224.11.112	AS8075 Microsoft Corporation	`0.19ms` from Chicago, US
75.187.198.32	AS10796 Charter Communications Inc	`8.97ms` from Columbus, US
121.40.49.32	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.82ms` from Hangzhou, CN
172.91.243.16	AS20001 Charter Communications Inc	`3.38ms` from Los Angeles, US
179.178.78.112	AS18881 TELEFÔNICA BRASIL S.A	`1.40ms` from Osasco, BR
179.191.227.0	AS263420 ACX TELECOM LTDA.	`15.38ms` from Osasco, BR
176.174.54.48	AS5410 Bouygues Telecom SA	`6.56ms` from Paris, FR
173.67.147.240	AS701 Verizon Business	`3.55ms` from Philadelphia, US
1.253.36.112	AS9318 SK Broadband Co Ltd	`7.00ms` from Seoul, KR
52.41.58.96	AS16509 Amazon.com, Inc.	`0.21ms` from Boardman, US
102.100.185.160	AS36925 MEDITELECOM	`16.52ms` from Casablanca, MA
76.187.130.224	AS11427 Charter Communications Inc	`4.45ms` from Dallas, US
149.224.124.160	AS15943 wilhelm.tel GmbH	`0.45ms` from Hamburg, DE
1.235.74.32	AS9318 SK Broadband Co Ltd	`1.53ms` from Incheon, KR

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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