111.186.192.0/18

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Parent Range 111.186.0.0/15
Registry APNIC
ID SHR-CERNET

WHOIS Details

inetnum:        111.186.0.0 - 111.187.255.255
netname:        SHR-CERNET
descr:          China Education and Research Network
descr:          Shanghai Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        NS2.NET.EDU.CN
remarks:        DNS.EDU.CN
remarks:        DNS2.EDU.CN
remarks:        origin AS4538
remarks:        confederation
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:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:15:57Z
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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        [email protected] 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:         [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        [email protected] was validated on 2025-08-15
abuse-mailbox:  [email protected]
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-15T09:38:28Z
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:         [email protected]
remarks:        [email protected]
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

route:          111.187.0.0/16
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2009-05-25T06:45:30Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 111.186.192.0/18

Range ASN Company Num of IPs
111.186.0.0/15 AS4538 China Education and Research Network 131,072

Nearby Ranges

BGP prefixes that overlap with 111.186.0.0/16

Range ASN Company Num of IPs
111.186.0.0/15 AS4538 China Education and Research Network 131,072

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

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

IP Address ASN Details
111.186.252.61 AS4538 China Education and Research Network Center 17.01ms from Guangzhou, CN
111.186.253.250 AS4538 China Education and Research Network Center 16.97ms from Guangzhou, CN
111.186.240.122 AS4538 China Education and Research Network Center 16.97ms from Guangzhou, CN
111.186.241.200 AS4538 China Education and Research Network Center 16.80ms from Guangzhou, CN
111.186.251.11 AS4538 China Education and Research Network Center 17.78ms from Guangzhou, 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
178.226.172.226 AS50266 Odido Netherlands B.V. 4.74ms from Amsterdam, NL
184.104.181.18 AS6939 Hurricane Electric LLC 0.19ms from Amsterdam, NL
123.120.109.50 AS4808 China Unicom Beijing Province Network 3.45ms from Beijing, CN
41.45.58.18 AS8452 TE-AS 3.34ms from Cairo, EG
207.181.211.98 AS6079 RCN 4.59ms from Chicago, US
34.251.253.194 AS16509 Amazon.com, Inc. 0.27ms from Dublin, IE
91.7.173.146 AS3320 Deutsche Telekom AG 1.78ms from Duesseldorf, DE
183.63.158.98 AS4134 CHINANET-BACKBONE 2.50ms from Guangzhou, CN
119.91.185.2 AS45090 Shenzhen Tencent Computer Systems Company Limited 8.64ms from Guangzhou, CN
2.218.33.114 AS5607 Sky UK Limited 1.18ms from London, GB
180.50.16.66 AS4713 NTT DOCOMO BUSINESS,Inc. 2.32ms from Osaka, JP
174.115.225.18 AS812 Rogers Communications Canada Inc. 5.35ms from Ottawa, CA
158.36.236.2 AS224 SIKT - KUNNSKAPSSEKTORENS TJENESTELEVERANDOR 4.88ms from Sandefjord, NO
58.33.189.242 AS4812 China Telecom (Group) 2.52ms from Shanghai, CN
185.190.90.2 AS212637 Lightnet Sh.p.k. 7.70ms from Sofia, BG
92.253.60.2 AS8376 Jordan Data Communications Company LLC 0.96ms from Amman, JO
86.86.207.178 AS1136 KPN B.V. 1.29ms from Amsterdam, NL
96.89.212.130 AS7922 Comcast Cable Communications, LLC 7.46ms from Boston, US
198.133.214.2 AS40443 CDK Global, LLC 0.84ms from Chicago, US
64.245.201.242 AS22362 Global Tel*link Corporation 2.11ms from Dallas, US
109.154.42.2 AS2856 British Telecommunications PLC 4.63ms from London, GB
209.191.16.226 AS7078 Monmouth Internet Corp 4.40ms from New York City, US
60.106.39.82 AS17676 SoftBank Corp. 9.14ms from Osaka, JP
150.43.192.242 AS2907 Research Organization of Information and Systems, National Institute of Informatics 13.14ms from Osaka, JP
18.231.160.178 AS16509 Amazon.com, Inc. 0.84ms from Osasco, BR

Traceroute

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

$
traceroute -a -n -q1 -f4 -m12 111.186.236.118
traceroute to 111.186.236.118 (111.186.236.118): 12 hops max, 52 byte packets
4 [AS749] 11.94.144.86 125.037 ms
5 *
6 [AS4538] 101.4.131.17 8.755 ms
8 [AS4538] 101.4.114.82 16.986 ms
9 [AS4538] 101.4.112.102 23.716 ms
10 *
11 *
12 *
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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