1.185.0.0/18

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	1.184.0.0/15
Registry	APNIC
ID	GZR-CERNET

WHOIS Details

inetnum:        1.184.0.0 - 1.185.255.255
netname:        GZR-CERNET
descr:          China Education and Research Network
descr:          Guangzhou Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        origin AS4538
remarks:        confederation
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:21Z
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

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

route:          1.184.0.0/15
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2010-06-08T06:42:01Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 1.185.0.0/18

Range	ASN	Company	Num of IPs
1.184.0.0/15	AS4538	China Education and Research Network	131,072

Nearby Ranges

BGP prefixes that overlap with 1.185.0.0/16

Range	ASN	Company	Num of IPs
1.184.0.0/15	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

Read more

Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
202.125.85.2	AS55451 Office of the National Broadcasting and	`3.40ms` from Bangkok, TH
210.245.77.2	AS18403 FPT Telecom Company	`1.72ms` from Hanoi, VN
60.17.173.34	AS4837 CHINA UNICOM China169 Backbone	`8.57ms` from Liaoyang, CN
82.58.189.210	AS3269 Telecom Italia S.p.A.	`1.53ms` from Milan, IT
187.73.226.18	AS262676 Intervip Networks Ltda.	`13.73ms` from Muriae, BR
192.64.84.114	AS19318 Interserver, Inc	`0.54ms` from New York City, US
109.245.150.130	AS15958 CETINdoo-NET	`6.13ms` from Sofia, BG
83.254.220.2	AS1257 Tele2 Sverige AB	`5.30ms` from Stockholm, SE
90.143.157.114	AS1257 Tele2 Sverige AB	`5.42ms` from Stockholm, SE
211.9.35.34	AS9600 So-net Corporation	`0.78ms` from Tokyo, JP
3.90.162.34	AS14618 Amazon.com, Inc.	`0.56ms` from Ashburn, US
52.7.28.242	AS14618 Amazon.com, Inc.	`0.61ms` from Ashburn, US
65.207.25.2	AS701 Verizon Business	`4.27ms` from Ashburn, US
185.4.16.194	AS24631 Tose'h Fanavari Ertebabat Pasargad Arian Co. PJS	`14.35ms` from Baku, AZ
41.44.242.2	AS8452 TE-AS	`5.12ms` from Cairo, EG
151.8.107.98	AS1267 WIND TRE S.P.A.	`13.17ms` from Frosinone, IT
80.155.62.162	AS3320 Deutsche Telekom AG	`1.00ms` from Hamburg, DE
54.192.151.162	AS16509 Amazon.com, Inc.	`0.10ms` from Kolkata, IN
209.200.179.226	AS32787 Akamai Technologies, Inc.	`0.41ms` from London, GB
16.26.7.210	AS16509 Amazon.com, Inc.	`0.63ms` from Melbourne, AU
151.67.81.130	AS1267 WIND TRE S.P.A.	`5.31ms` from Milan, IT
91.144.146.178	AS41754 JSC ER-Telecom Holding	`10.91ms` from Moscow, RU
178.173.36.2	AS47759 POIG Ltd.	`1.84ms` from Moscow, RU
36.151.178.114	AS56046 China Mobile communications corporation	`0.38ms` from Nanjing, CN
100.40.227.242	AS701 Verizon Business	`3.32ms` from New York City, 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 -m13 1.185.30.218

traceroute to 1.185.30.218 (1.185.30.218): 13 hops max, 52 byte packets

2 [AS749] 11.73.9.241 2.1 ms

3 *

4 [AS749] 11.94.171.245 2.907 ms

5 *

6 [AS4538] 101.4.131.133 3.143 ms

7 [AS4538] 219.224.103.89 3.382 ms

8 [AS4538] 101.4.117.93 7.94 ms

9 *

10 [AS4538] 101.4.118.154 19.974 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Shenzhen, CN

On December 28th 2025

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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