219.244.128.0/20

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	219.244.0.0/14
Registry	APNIC
ID	CERNET-CN

WHOIS Details

inetnum:        219.244.0.0 - 219.247.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          Xi'an 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:  2020-10-20T00:56:45Z
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

Overlapping Ranges

BGP prefixes that contain 219.244.128.0/20

Range	ASN	Company	Num of IPs
219.244.0.0/14	AS4538	China Education and Research Network	262,144

Nearby Ranges

BGP prefixes that overlap with 219.244.0.0/16

Range	ASN	Company	Num of IPs
219.244.0.0/14	AS4538	China Education and Research Network	262,144

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

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

IP Address	ASN	Details
219.244.128.12	AS4538 China Education and Research Network Center	`17.53ms` from Chengdu, 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
188.166.71.116	AS14061 DigitalOcean, LLC	`0.23ms` from Amsterdam, NL
82.174.112.228	AS50266 Odido Netherlands B.V.	`3.66ms` from Amsterdam, NL
150.239.228.4	AS36351 IBM Cloud	`0.56ms` from Ashburn, US
139.45.163.4	AS5091 Stripe, Inc.	`1.47ms` from Berlin, DE
104.249.58.100	AS397373 H4Y Technologies LLC	`0.16ms` from Charlotte, US
98.222.30.36	AS7922 Comcast Cable Communications, LLC	`8.72ms` from Chicago, US
75.166.53.132	AS209 CenturyLink Communications, LLC	`2.02ms` from Denver, US
87.173.32.164	AS3320 Deutsche Telekom AG	`9.76ms` from Frankfurt am Main, DE
137.220.224.20	AS152194 CTG Server Limited	`0.49ms` from Hong Kong, HK
217.43.38.228	AS2856 British Telecommunications PLC	`4.45ms` from London, GB
201.173.217.180	AS11888 Television Internacional, S.A. de C.V.	`9.63ms` from Monterrey, MX
45.140.55.36	AS35048 Biterika Group LLC	`0.39ms` from Moscow, RU
125.106.58.212	AS4134 CHINANET-BACKBONE	`9.65ms` from Nanchang, CN
187.59.30.180	AS18881 TELEFÔNICA BRASIL S.A	`3.04ms` from Osasco, BR
94.131.118.148	AS209847 WorkTitans B.V.	`0.18ms` from Paris, FR
32.213.249.52	AS46690 Southern New England Telephone Company and SNET America, Inc.	`9.21ms` from Secaucus, US
119.37.196.164	AS4134 CHINANET-BACKBONE	`6.14ms` from Shanghai, CN
52.220.237.52	AS16509 Amazon.com, Inc.	`0.14ms` from Singapore, SG
60.64.182.20	AS17676 SoftBank Corp.	`2.55ms` from Tokyo, JP
178.235.111.52	AS29314 VECTRA S.A.	`13.78ms` from Warsaw, PL
42.237.34.68	AS4837 CHINA UNICOM China169 Backbone	`7.40ms` from Zhengzhou, CN
209.71.49.132	AS20259 Copper Valley Long Distance, LLC	`3.57ms` from Anchorage, US
73.117.153.228	AS7922 Comcast Cable Communications, LLC	`13.60ms` from Ashburn, US
174.85.186.116	AS20115 Charter Communications LLC	`16.49ms` from Atlanta, US
172.11.85.68	AS7018 AT&T Enterprises, LLC	`8.49ms` from Atlanta, US

Traceroute

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

traceroute -a -n -q1 -f4 -m16 219.244.133.53

traceroute to 219.244.133.53 (219.244.133.53): 16 hops max, 52 byte packets

4 [] 110.93.252.224 0.65 ms

5 [] 123.255.91.118 114.67 ms

6 [AS4538] 101.4.114.181 144.447 ms

7 *

8 *

9 [AS4538] 101.4.115.249 152.253 ms

10 [AS4538] 101.4.112.14 159.815 ms

11 *

12 *

13 [AS4538] 202.200.28.30 163.288 ms

14 *

15 *

16 *

Measurement taken from

IPinfo ProbeNet in Karachi, PK

On November 14th 2025

What are IP address ranges?

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