| AS Number | 4538 |
|---|---|
| AS Name | ERX-CERNET-BKB |
| Organization | China Education and Research Network Center(ERX-CERNET-BKB) |
| Country | CN |
| Website | cernet.edu.cn |
| Number of IPv4 Routes | 5157 |
| Number of IPv6 Routes | 312 |
| ASN type | EDUCATION |
| Allocation Status | allocated |
| Registry | APNIC |
| Date Allocated | 2002-08-01 |
| Route | # IPs |
|---|---|
| 219.223.116.0/22 | 1024 |
| 211.82.160.0/20 | 4096 |
| 2001:250:588d::/48 | ~1×10²⁴ |
| 210.45.95.0/24 | 256 |
| 210.37.88.0/21 | 2048 |
| 2001:250:5868::/48 | ~1×10²⁴ |
| 116.13.152.0/23 | 512 |
| 180.201.89.0/24 | 256 |
| 101.77.0.0/16 | 65536 |
| buy plan | 256 |
| buy plan | 2048 |
| buy plan | 2048 |
| buy plan | 2048 |
| buy plan | 4096 |
% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to 'AS4538'
% Abuse contact for 'AS4538' is 'abuse@cernet.edu.cn'
aut-num: AS4538
as-name: ERX-CERNET-BKB
descr: China Education and Research Network Center
descr: Tsinghua University
descr: Beijing 100084
country: CN
remarks: This aut-num object created as part of
remarks: the ER-Transfer from ARIN
admin-c: CER-AP
tech-c: CER-AP
abuse-c: AC1685-AP
mnt-lower: MAINT-CERNET-AP
mnt-routes: MAINT-CERNET-AP
mnt-by: APNIC-HM
mnt-irt: IRT-CERNET-AP
last-modified: 2025-10-31T08:14:57Z
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: 2025-09-04T00:59:41Z
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
% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-US2)
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#
ASNumber: 4538
ASName: APNIC-4538
ASHandle: AS4538
RegDate: 2002-07-31
Updated: 2009-10-08
Comment: This AS number is not registered in the ARIN database.
Comment: For details, refer to the APNIC Whois Database via
Comment: WHOIS.APNIC.NET or http://wq.apnic.net/apnic-bin/whois.pl
Ref: https://rdap.arin.net/registry/autnum/4538
ResourceLink: https://apps.db.ripe.net/db-web-ui/query
ResourceLink: whois.apnic.net
OrgName: Asia Pacific Network Information Centre
OrgId: APNIC
Address: PO Box 3646
City: South Brisbane
StateProv: QLD
PostalCode: 4101
Country: AU
RegDate:
Updated: 2012-01-24
Ref: https://rdap.arin.net/registry/entity/APNIC
ReferralServer: whois://whois.apnic.net
ResourceLink: https://apps.db.ripe.net/db-web-ui/query
OrgAbuseHandle: AWC12-ARIN
OrgAbuseName: APNIC Whois Contact
OrgAbusePhone: +61 7 3858 3188
OrgAbuseEmail: search-apnic-not-arin@apnic.net
OrgAbuseRef: https://rdap.arin.net/registry/entity/AWC12-ARIN
OrgTechHandle: AWC12-ARIN
OrgTechName: APNIC Whois Contact
OrgTechPhone: +61 7 3858 3188
OrgTechEmail: search-apnic-not-arin@apnic.net
OrgTechRef: https://rdap.arin.net/registry/entity/AWC12-ARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#
| AS Number | Description | Country |
|---|---|---|
| AS4837 | China Unicom Backbone | CN |
| AS7660 | Asia Pacific Advanced Network - Japan | JP |
| AS138441 | China Education and Research Network CERNET | CN |
| AS24372 | CERNET2 IX at Harbin Institute of Technology | CN |
| AS6939 | Hurricane Electric LLC | US |
| AS8359 | MTS PJSC | RU |
| AS24357 | CERNET2 IX at South China University of Technology | AU |
| AS24352 | CERNET2 IX at Tianjin University | CN |
| AS24355 | CERNET2 IX at University of Electronic Science and Technology of China | AU |
| AS139139 | Shenyang Agricultural University | CN |
| AS9808 | China Mobile Communications Group Co., Ltd. | CN |
| AS24371 | CERNET2 IX at Jilin University | CN |
| AS4134 | China Telecom Backbone | CN |
| AS138378 | China Education and Research Network CERNET | CN |
| AS134169 | CERNEWTECH Beijing co.,LTD | AU |
| AS9405 | Test platform Service Center | AU |
| AS24353 | CERNET2 IX at Xi'an Jiaotong University | AU |
| AS146782 | University Of Chinese Academy Of Social Sciences | CN |
| AS4134 | CHINANET BACKBONE No.31,Jin rong Street | CN |
| buy plan | Beijing Foreign Studies University | CN |
| buy plan | Aperture Science Limited | HK |
| buy plan | CERNET2 IX at Southeast University | CN |
| buy plan | i3D.net B.V | NL |
| buy plan | Axclusive | SG |
| AS Number | Description | Country |
|---|---|---|
| AS39120 | Convergenze S.p.A. | IT |
| AS23911 | China Next Generation Internet Beijing IX | AU |
| AS6453 | TATA COMMUNICATIONS AMERICA INC | US |
| AS9304 | HGC Global Communications Limited | HK |
| AS9808 | China Mobile | CN |
| AS58453 | China Mobile International Limited | HK |
| AS140570 | Hong Kong Beecloud System Technology Services Limited | HK |
| AS6939 | Hurricane Electric LLC | US |
| AS8359 | MTS PJSC | RU |
| buy plan | China Telecom Global Limited | HK |
| buy plan | Aperture Science Limited | HK |
| buy plan | CHINANET BACKBONE No.31,Jin rong Street | CN |
| buy plan | Asia Pacific Advanced Network Japan | JP |
| buy plan | CHINA UNICOM China169 Backbone | AU |
| AS Number | Description | Country |
|---|---|---|
| AS24352 | CERNET2 IX at Tianjin University | AU |
| AS138441 | China Education and Research Network CERNET | CN |
| AS139139 | Shenyang Agricultural University | AU |
| AS24357 | CERNET2 IX at South China University of Technology | AU |
| AS24355 | CERNET2 IX at University of Electronic Science and Technology of China | AU |
| AS23910 | China Next Generation Internet CERNET2 | AU |
| AS138378 | China Education and Research Network CERNET | CN |
| AS134169 | CERNEWTECH Beijing co.,LTD | AU |
| AS9405 | Test platform Service Center | AU |
| AS24353 | CERNET2 IX at Xi'an Jiaotong University | AU |
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