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:         [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:          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

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Useful for Cybersecurity

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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
92.111.50.226	AS33915 Vodafone Libertel B.V.	`8.94ms` from Amsterdam, NL
143.204.235.2	AS16509 Amazon.com, Inc.	`0.10ms` from Chicago, US
177.4.125.18	AS8167 V tal	`0.93ms` from Curitiba, BR
183.81.48.162	AS18403 FPT Telecom Company	`0.54ms` from Hanoi, VN
113.187.2.242	AS45899 VNPT Corp	`0.84ms` from Hanoi, VN
175.144.44.146	AS4788 TM TECHNOLOGY SERVICES SDN. BHD.	`2.86ms` from Kuala Lumpur, MY
31.120.52.66	AS2856 British Telecommunications PLC	`2.95ms` from London, GB
194.247.94.34	AS5564 Brightsolid Online Technology Ltd	`12.65ms` from London, GB
88.10.238.98	AS3352 TELEFONICA DE ESPANA S.A.U.	`7.88ms` from Madrid, ES
64.83.195.162	AS20115 Charter Communications LLC	`7.58ms` from Minneapolis, US
87.90.60.2	AS5410 Bouygues Telecom SA	`0.75ms` from Paris, FR
100.49.33.82	AS14618 Amazon.com, Inc.	`0.17ms` from Reston, US
2.35.129.178	AS30722 Fastweb SpA	`13.32ms` from Rome, IT
78.37.14.130	AS12389 PJSC Rostelecom	`4.20ms` from Saint Petersburg, RU
12.71.45.226	AS7018 AT&T Enterprises, LLC	`4.30ms` from San Jose, US
201.76.40.2	AS27715 Locaweb Serviços de Internet S/A	`0.89ms` from Sao Paulo, BR
13.55.12.34	AS16509 Amazon.com, Inc.	`0.15ms` from Sydney, AU
191.204.210.34	AS26599 TELEFÔNICA BRASIL S.A	`1.82ms` from São Paulo, BR
152.244.53.210	AS26599 TELEFÔNICA BRASIL S.A	`2.37ms` from São Paulo, BR
126.50.216.82	AS17676 SoftBank Corp.	`8.30ms` from Tokyo, JP
173.206.127.98	AS11814 Distributel Communications Limited	`1.08ms` from Toronto, CA
206.198.190.130	AS14453 ADVANCED KNOWLEDGE NETWORKS	`2.61ms` from Toronto, CA
4.236.218.226	AS8075 Microsoft Corporation	`0.41ms` from Ashburn, US
152.136.201.210	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.72ms` from Beijing, CN
186.29.151.18	AS19429 ETB - Colombia	`0.65ms` from Bogota, CO

Traceroute

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

traceroute -a -n -q1 -f3 -m14 1.185.41.225

traceroute to 1.185.41.225 (1.185.41.225): 14 hops max, 52 byte packets

3 [AS749] 11.48.238.133 0.608 ms

4 [] 45.112.220.193 1.201 ms

5 *

6 *

7 [AS4538] 101.4.131.133 5.382 ms

8 [AS4538] 219.224.103.89 6.938 ms

9 [AS4538] 101.4.117.93 10.762 ms

10 *

11 [AS4538] 101.4.118.154 21.171 ms

12 *

13 *

14 *

Measurement taken from

IPinfo ProbeNet in Heyuan, CN

On January 30th 2026

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.

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