219.227.100.0/22

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	219.227.0.0/16
Registry	APNIC
ID	GZR-CERNET

WHOIS Details

inetnum:        219.227.0.0 - 219.227.255.255
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
remarks:        GZR-CERNET
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:24Z
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

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

Overlapping Ranges

BGP prefixes that contain 219.227.100.0/22

Range	ASN	Company	Num of IPs
219.227.0.0/16	AS4538	China Education and Research Network	65,536

Nearby Ranges

BGP prefixes that overlap with 219.227.0.0/16

Range	ASN	Company	Num of IPs
219.227.0.0/16	AS4538	China Education and Research Network	65,536

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

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

IP Address	ASN	Details
219.227.100.1	AS4538 China Education and Research Network Center	`3.84ms` from Shenzhen, 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
97.84.29.198	AS20115 Charter Communications LLC	`18.45ms` from Atlanta, US
186.86.134.22	AS10620 Telmex Colombia S.A.	`18.45ms` from Bogota, CO
196.138.212.22	AS24835 Vodafone Data	`11.96ms` from Cairo, EG
93.214.104.182	AS3320 Deutsche Telekom AG	`11.73ms` from Frankfurt am Main, DE
72.130.247.134	AS20001 Charter Communications Inc	`4.06ms` from Honolulu, US
178.213.191.86	AS196777 SKORUK ANDRIY OLEKSANDROVYCH	`0.62ms` from Kyiv, UA
148.231.218.6	AS16596 Universidad Autonoma del Estado de Baja California	`5.66ms` from Los Angeles, US
97.202.95.54	AS6167 Verizon Business	`18.20ms` from Los Angeles, US
95.221.248.134	AS12714 PJSC MegaFon	`1.93ms` from Moscow, RU
187.33.2.6	AS15830 Equinix (EMEA) Acquisition Enterprises B.V.	`0.88ms` from Rio de Janeiro, BR
14.65.6.198	AS4766 Korea Telecom	`3.40ms` from Seoul, KR
65.188.245.70	AS11426 Charter Communications Inc	`13.10ms` from Ashburn, US
96.255.227.70	AS701 Verizon Business	`1.54ms` from Ashburn, US
13.90.80.70	AS8075 Microsoft Corporation	`0.41ms` from Ashburn, US
193.92.236.182	AS1241 Forthnet	`2.85ms` from Athens, GR
104.137.53.134	AS33363 Charter Communications, Inc	`14.13ms` from Atlanta, US
191.235.130.102	AS8075 Microsoft Corporation	`0.41ms` from Dublin, IE
50.185.107.246	AS7922 Comcast Cable Communications, LLC	`7.48ms` from Flint, US
91.35.203.214	AS3320 Deutsche Telekom AG	`2.15ms` from Hamburg, DE
113.2.62.246	AS4837 CHINA UNICOM China169 Backbone	`5.69ms` from Harbin, CN
66.91.244.102	AS20001 Charter Communications Inc	`4.04ms` from Honolulu, US
58.236.29.150	AS9318 SK Broadband Co Ltd	`1.64ms` from Incheon, KR
3.11.195.134	AS16509 Amazon.com, Inc.	`0.11ms` from London, GB
95.254.159.230	AS3269 Telecom Italia S.p.A.	`6.21ms` from Milan, IT
45.79.158.86	AS63949 Akamai Connected Cloud	`0.14ms` from Morris Plains, US

Traceroute

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

traceroute -a -n -q1 -f6 219.227.100.1

traceroute to 219.227.100.1 (219.227.100.1): 64 hops max, 52 byte packets

6 [AS4538] 101.4.131.133 4.25 ms

7 [AS4538] 219.224.103.89 4.33 ms

8 *

9 [AS4538] 218.192.242.245 4.157 ms

10 [AS4538] 218.192.242.98 4.562 ms

11 [AS4538] 1.184.238.230 5.039 ms

12 [AS4538] 1.184.238.237 5.152 ms

13 [AS4538] 1.184.252.241 5.621 ms

14 [AS4538] 1.184.252.130 6.313 ms

15 [AS4538] 219.227.100.1 3.82 ms

Measurement taken from

IPinfo ProbeNet in Shenzhen, CN

On April 24th 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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