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iamroot.tech
Internet tools
DNS lookup
DNS propagation check
Port scan + probeing
WHOIS / RDAP lookup
HTTP/S request tool
TLS/SSL certificate check
beta
E-mail DNSBL blacklist check
Reverse DNS
CIDR calculator
beta
ASN database lookup
beta
What is my IPv4 and IPv6?
GeoIP location
QR code generator
Dev tools
Color contrast checker
Color picker
Lorem ipsum generator
URL encode/decode
HTML encode/decode
BASE64 encode/decode
Hash calculator (CRC64 - MD5 - SHA - RIPEMD)
Misc tools
Password generator
World map, day/night + local time
beta
Internet tools
DNS lookup
DNS propagation check
Port scan + probeing
WHOIS / RDAP lookup
HTTP/S request tool
TLS/SSL certificate check
beta
E-mail DNSBL blacklist check
Reverse DNS
CIDR calculator
beta
ASN database lookup
beta
What is my IPv4 and IPv6?
GeoIP location
QR code generator
Dev tools
Color contrast checker
Color picker
Lorem ipsum generator
URL encode/decode
HTML encode/decode
BASE64 encode/decode
Hash calculator (CRC64 - MD5 - SHA - RIPEMD)
Misc tools
Password generator
World map, day/night + local time
beta
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ASN database
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Result
AS23911, IRT-CERNET-AP
Last update of data:
15-04-2024 06:07 UTC
ASN:
AS23911 (CNGI-BJIX-AS-AP)
Country:
CN - China (Asia)
Org.:
IRT-CERNET-AP
https://www.cernet.edu.cn
Stats:
Peers
22
IX'es
-
Prefixes
4
IPv4
512
IPv6
7,9E+28
Contact:
IRT-CERNET-AP
Network Research Center,
Main Bldg, Tsinghua Univ
Beijing 100084, China
voice +86-10-62784301
fax +86-10-62785933
abuse@cernet.edu.cn
abuse@cernet.edu.cn
Peers
Country
Relationship
ASN
Organization
Peers
Prefix'es
Britain (UK)
Upstream
AS9002
RETN Limited
3.248
37
China
Downstream
AS59265
China telecom China Next Generation Internet
1
1
China
Downstream
AS24489
IRT-CERNET-AP
9
2
China
Downstream
AS4538
China Education and Research Network Center
56
87
China
Downstream
AS7497
CNIC-CAS
25
27
China
Downstream
AS23910
IRT-CERNET-AP
49
10
China
Downstream
AS38255
China Education and Research Network (CERNET)
4.101
1
China
Downstream
AS45110
Beijing Tian Wei Xin Tong technology corp. limited.
7
12
China
Downstream
AS9401
National Library of China
1
2
Hong Kong
Upstream
AS4635
The Hong Kong Internet Exchange Limited
308
-
Hong Kong
Peer
AS38008
Aperture Science Limited
448
16
Iran
Upstream
AS20965
DANTE-MNT
72
3
Japan
Upstream
AS2497
JPNIC-2Byte-ASBLOCK-AP
341
176
Japan
Upstream
AS7660
Asia Pacific Advanced Network - Japan
37
4
Netherlands
Peer
AS49544
i3D.net B.V
6.668
134
Singapore
Upstream
AS24482
SG.GS
8.400
17
Singapore
Upstream
AS23855
SingAREN
51
3
United States
Upstream
AS3491
PCCW Global, Inc.
711
62
United States
Upstream
AS6939
Hurricane Electric LLC
10.675
262
United States
Upstream
AS11537
Internet2
124
11
United States
Peer
AS36236
NetActuate, Inc
7.474
206
Upstream
AS1273
CW-EUROPE-GSOC
288
161
Announced (uniq) prefixes
Country
ASN
Announced prefix
Description
Size
China
AS23911
210.25.187.0/24
China Education and Research Network
256
China
AS23911
210.25.189.0/24
China Education and Research Network
256
Country
ASN
Announced prefix
Description
Size
China
AS23911
2001:252::/32
CNGI International Gateway Network (CNGIIGN)
7,9E+28
China
AS23911
2001:7fa:5::/48
RIPE Network Coordination Centre
1,2E+24
Log
000
+000
Parse input (ASN)
000
+000
Search database for 'AS23911'
002
+002
1 ASN's found
002
+000
Done
002
+000
Load details of AS23911
011
+009
4 prefixes found
030
+019
22 peers found
032
+002
No matching IX connections found!
035
+002
1 links loaded, 1 verified
036
+001
1 historical items loaded
036
+000
Done