219.243.208.0/21
AS4538 · China Education and Research Network Center
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| Country |
China
|
| Domain | cernet.edu.cn |
| ASN | AS4538 |
| Parent Range | 219.242.0.0/15 |
| Registry | APNIC |
| ID | CERNET-CN |
WHOIS Details
inetnum: 219.242.0.0 - 219.243.255.255 netname: CERNET-CN descr: China Education and Research Network descr: Beijing 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: 2020-10-20T00:56:47Z 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 219.243.208.0/21
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 219.242.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
Nearby Ranges
BGP prefixes that overlap with 219.243.0.0/16
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 219.242.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
Hosted domains
There are 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.
| IP Address | Domain | Domains on this IP |
|---|---|---|
| 219.243.215.215 | nasp.fit | 1 |
Hosted domains API
Pingable IPs
49 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 219.243.210.222 |
2.92ms from Beijing,
CN
|
|
| 219.243.209.208 |
2.71ms from Beijing,
CN
|
|
| 219.243.212.79 |
2.72ms from Beijing,
CN
|
|
| 219.243.211.212 |
3.02ms from Beijing,
CN
|
|
| 219.243.214.253 |
2.69ms from Beijing,
CN
|
|
| 219.243.215.65 |
2.71ms from Beijing,
CN
|
|
| 219.243.208.12 |
3.08ms from Tianjin,
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 |
|---|---|---|
| 94.247.129.101 |
0.42ms from Almaty,
KZ
|
|
| 31.149.118.53 |
0.46ms from Amsterdam,
NL
|
|
| 82.198.81.245 |
1.19ms from Duesseldorf,
DE
|
|
| 149.129.76.37 |
1.56ms from Hong Kong,
HK
|
|
| 89.206.180.101 |
0.97ms from London,
GB
|
|
| 38.173.105.5 |
0.27ms from Los Angeles,
US
|
|
| 217.108.136.245 |
2.70ms from Paris,
FR
|
|
| 123.135.93.85 |
5.29ms from Qingdao,
CN
|
|
| 180.152.72.37 |
4.08ms from Shanghai,
CN
|
|
| 85.25.144.197 |
0.22ms from Strasbourg,
FR
|
|
| 180.34.84.213 |
3.93ms from Tokyo,
JP
|
|
| 122.1.245.213 |
0.88ms from Tokyo,
JP
|
|
| 105.108.51.197 |
14.78ms from Algiers,
DZ
|
|
| 188.247.214.37 |
7.51ms from Almaty,
KZ
|
|
| 1.179.158.213 |
2.08ms from Bangkok,
TH
|
|
| 160.1.73.37 |
0.31ms from Boardman,
US
|
|
| 206.83.11.21 |
0.37ms from Chicago,
US
|
|
| 74.138.42.117 |
17.20ms from Columbus,
US
|
|
| 69.146.10.101 |
8.67ms from Denver,
US
|
|
| 173.38.117.133 |
2.13ms from Durham,
US
|
|
| 103.171.34.213 |
0.45ms from Hong Kong,
HK
|
|
| 69.203.223.21 |
7.30ms from New York City,
US
|
|
| 142.176.77.101 |
18.06ms from New York City,
US
|
|
| 92.129.42.53 |
4.91ms from Paris,
FR
|
|
| 52.71.236.117 |
0.22ms from Reston,
US
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Beijing, CN
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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