210.33.80.0/21

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Registry APNIC
ID CERNET-CN

WHOIS Details

inetnum:        210.32.0.0 - 210.35.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          China Education and Research Network Center
descr:          Tsinghua University
descr:          Beijing, 100084
country:        CN
admin-c:        JW1-CN
tech-c:         XL1-CN
tech-c:         LZ1-CN
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-10-20T00:56:43Z
source:         APNIC

irt:            IRT-CERNET-AP
address:        Network Research Center,
address:        Main Bldg, 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:        http://www.ccert.edu.cn
remarks:        abuse@cernet.edu.cn was validated on 2025-08-15
mnt-by:         MAINT-CERNET-AP
last-modified:  2025-11-18T00:26:28Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Research Center,
address:        Main Bldg, 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 2025-08-15
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-15T09:38:28Z
source:         APNIC

person:         Jianping Wu
address:        China Education and Research Network Center
address:        Room 225, Main Building, Tsinghua University
address:        Beijing 100084
address:        CN
country:        CN
phone:          +86-10-6278-5983
fax-no:         +86-10-6278-5933
e-mail:         jianping@cernet.edu.cn
nic-hdl:        JW1-CN
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:14:25Z
source:         APNIC

person:         Ling Zhang
address:        Network Center
address:        South China University of Technology
address:        Guangzhou, Guangdong 510641, China
address:        CN
country:        CN
phone:          +86-20-87110596
fax-no:         +86-20-87110019
e-mail:         ling@scut.edu.cn
nic-hdl:        LZ1-CN
notify:         dbmon@apnic.net
mnt-by:         MAINT-NULL
last-modified:  2011-12-22T05:14:25Z
source:         APNIC

person:         Xing Li
address:        China Education and Research Network Center
address:        Room 225, Main Building, Tsinghua University
address:        Beijing 100084
address:        CN
country:        CN
phone:          +86-10-6278-5983
fax-no:         +86-10-6278-5933
e-mail:         xing@cernet.edu.cn
nic-hdl:        XL1-CN
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:14:25Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 210.33.0.0/16

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

Pingable IPs

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

IP Address ASN Details
210.33.80.46 AS4538 China Education and Research Network Center 9.46ms from Hangzhou, CN
210.33.87.17 AS4538 China Education and Research Network Center 9.30ms from Hangzhou, CN
210.33.86.2 AS4538 China Education and Research Network Center 9.46ms from Hangzhou, CN
210.33.82.7 AS4538 China Education and Research Network Center 9.36ms from Hangzhou, CN
210.33.84.1 AS4538 China Education and Research Network Center 9.40ms from Hangzhou, 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
70.106.182.21 AS701 Verizon Business 2.05ms from Ashburn, US
138.255.4.37 AS263949 Mega Internet LTDA ME 8.00ms from Curitiba, BR
98.57.22.197 AS7922 Comcast Cable Communications, LLC 9.79ms from Dallas, US
88.249.97.245 AS9121 Turk Telekomunikasyon Anonim Sirketi 3.87ms from Istanbul, TR
197.251.224.117 AS29614 Ghana Telecommunications Company Limited 8.49ms from Lagos, NG
68.4.217.165 AS22773 Cox Communications Inc. 5.43ms from Los Angeles, US
103.142.114.5 AS139524 A C N Fiber Private Limited 1.00ms from Mumbai, IN
103.243.117.101 AS5065 Bunny Communications 1.66ms from Mumbai, IN
177.99.247.21 AS18881 TELEFÔNICA BRASIL S.A 2.60ms from Osasco, BR
78.199.172.5 AS12322 Free SAS 1.39ms from Paris, FR
100.31.138.5 AS14618 Amazon.com, Inc. 0.45ms from Reston, US
119.172.225.53 AS9824 JCOM Co., Ltd. 10.91ms from Tokyo, JP
83.111.137.53 AS5384 Emirates Internet 4.09ms from Al Fujairah City, AE
174.110.250.5 AS11426 Charter Communications Inc 9.78ms from Charlotte, US
12.124.99.149 AS7018 AT&T Enterprises, LLC 4.50ms from Durham, US
120.32.60.117 AS4134 CHINANET-BACKBONE 2.28ms from Fuzhou, CN
47.96.187.69 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 3.98ms from Hangzhou, CN
125.115.77.197 AS4134 CHINANET-BACKBONE 10.70ms from Hangzhou, CN
104.176.131.213 AS7018 AT&T Enterprises, LLC 3.99ms from Houston, US
106.251.94.53 AS3786 LG DACOM Corporation 2.19ms from Incheon, KR
165.154.255.85 AS142002 Scloud Pte Ltd 0.26ms from Los Angeles, US
86.0.70.53 AS5089 Virgin Media Limited 8.45ms from Maidenhead, GB
148.153.248.85 AS63199 CDS Global Cloud Co., Ltd 0.19ms from Miami, US
189.175.23.37 AS8151 UNINET 1.71ms from Monterrey, MX
72.158.134.5 AS25641 Florida Health Care Plan, Inc. 13.03ms from Orlando, US

Traceroute

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

$
traceroute -a -n -q1 -f2 210.33.82.7
traceroute to 210.33.82.7 (210.33.82.7): 64 hops max, 52 byte packets
2 [AS749] 11.73.8.6 2.77 ms
3 *
4 *
5 *
6 [AS4538] 101.4.131.17 6.451 ms
8 *
9 *
10 *
11 [AS4538] 210.32.122.202 10.743 ms
12 [AS4538] 210.33.82.7 9.409 ms
Measurement taken from IPinfo ProbeNet in Hangzhou, CN
On

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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