What is ASN AS138374?

ASN AS138374 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS138374?

AS138374 is listed under CERNET2 regional IX at Taiyuan University.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

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AS138374 CERNET2 regional IX at Taiyuan University

CERNET2 regional IX at Taiyuan University cernet.edu.cn

CN 56 Routes

AS Data

AS138374

AS138374 – CERNET2 regional IX at Taiyuan University

AS Number	138374
AS Name	CNGI-TYN-IX-AS-AP
Organization	CERNET2 regional IX at Taiyuan University (org-cear1-ap)
Country	CN
Website	cernet.edu.cn
Number of IPv4 Routes	0
Number of IPv6 Routes	56
ASN type	EDUCATION
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS138374 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2001:250:c3b::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c28::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c0b::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c23::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c07::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c14::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c35::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c2c::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c26::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c1a::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c0e::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c32::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c00::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c04::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c2a::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c1c::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c25::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c0d::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c33::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c16::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c05::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c1b::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c24::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c34::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c06::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c15::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c2b::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c36::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c1e::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c01::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c3f::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c27::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c31::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c0f::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c0a::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c03::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c08::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c22::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c13::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:da8:ce::/48	AS138374	CERNET2 regional IX at Taiyuan University	CNGI CERNET	~1×10²⁴
2001:250:c2d::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c17::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c2f::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c12::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c09::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c20::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c18::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c11::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c37::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c29::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c1f::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c21::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c19::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c3e::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c02::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴
2001:250:c30::/48	AS138374	CERNET2 regional IX at Taiyuan University	CERNET IPv6 Backbone	~1×10²⁴

Raw Whois Response

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS137530 - AS138553'

as-block:       AS137530 - AS138553
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2017-12-08T06:45:58Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS138374'

% Abuse contact for 'AS138374' is 'abuse@cernet.edu.cn'

aut-num:        AS138374
as-name:        CNGI-TYN-IX-AS-AP
descr:          CERNET2 regional IX at Taiyuan University
descr:          CERNET Center
descr:          Beijing 100084, China
country:        CN
org:            ORG-CEAR1-AP
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:  2020-09-03T09:16:11Z
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:  2026-05-25T09:07:47Z
source:         APNIC

organisation:   ORG-CEAR1-AP
org-name:       China Education and Research Network (CERNET)
country:        CN
address:        FIT 3-220,
address:        Tsinghua University
phone:          +86-10-62785983
fax-no:         +86-10-62785933
e-mail:         hostmaster@cernic.net
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2018-09-13T12:56:34Z
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

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-UK2)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.apnic.net",
  "as_blocks" : [ {
    "as_block" : "AS137530 - AS138553",
    "description" : [ "APNIC ASN block" ],
    "admin_contacts" : [ "HM20-AP" ],
    "tech_contacts" : [ "HM20-AP" ],
    "remarks" : [ "These AS numbers are further assigned by APNIC", "to APNIC members and end-users in the APNIC region" ],
    "mnt_by" : [ "APNIC-HM" ],
    "mnt_lower" : [ "APNIC-HM" ],
    "date_updated" : "2017-12-08",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS138374",
    "as_name" : "CNGI-TYN-IX-AS-AP",
    "description" : [ "CERNET2 regional IX at Taiyuan University", "CERNET Center", "Beijing 100084, China" ],
    "country" : "CN",
    "organization" : "ORG-CEAR1-AP",
    "admin_contacts" : [ "CER-AP" ],
    "tech_contacts" : [ "CER-AP" ],
    "abuse_contacts" : [ "AC1685-AP" ],
    "mnt_irt" : [ "IRT-CERNET-AP" ],
    "mnt_lower" : [ "MAINT-CERNET-AP" ],
    "mnt_routes" : [ "MAINT-CERNET-AP" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2020-09-03",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-CERNET-AP",
    "address" : [ "Network Center,", "FIT-3-220, Tsinghua Univ", "Beijing 100084, China" ],
    "city" : "Beijing",
    "zip_code" : "100084",
    "country" : "CHINA",
    "email" : [ "abuse@cernet.edu.cn" ],
    "abuse_mailbox" : [ "abuse@cernet.edu.cn" ],
    "phone" : [ "+86-10-62784301" ],
    "fax_no" : [ "+86-10-62785933" ],
    "admin_contacts" : [ "CER-AP" ],
    "tech_contacts" : [ "CER-AP" ],
    "remarks" : [ "timezone GMT+8", "abuse@cernet.edu.cn was validated on 2026-03-05" ],
    "mnt_by" : [ "MAINT-CERNET-AP" ],
    "date_updated" : "2026-05-25",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-CEAR1-AP",
    "name" : "China Education and Research Network (CERNET)",
    "address" : [ "FIT 3-220,", "Tsinghua University" ],
    "country" : [ "CN" ],
    "email" : [ "hostmaster@cernic.net" ],
    "phone" : [ "+86-10-62785983" ],
    "fax_no" : [ "+86-10-62785933" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2018-09-13",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "CER-AP",
    "name" : "CERNET Helpdesk",
    "address" : [ "CERNET Center", "Beijing 100084, China" ],
    "city" : "Beijing",
    "zip_code" : "100084",
    "country" : "CN",
    "email" : [ "helpdesk@cernet.edu.cn" ],
    "phone" : [ "+86-10-6278-4049" ],
    "fax_no" : [ "+86-10-6278-5933" ],
    "admin_contacts" : [ "XL1-CN" ],
    "tech_contacts" : [ "SZ2-AP" ],
    "remarks" : [ "abuse@cernet.edu.cn" ],
    "mnt_by" : [ "MAINT-CERNET-AP" ],
    "date_updated" : "2020-09-03",
    "source" : "APNIC",
    "addressCountry" : "CHINA"
  } ],
  "technical_contacts" : [ {
    "handle" : "CER-AP",
    "name" : "CERNET Helpdesk",
    "address" : [ "CERNET Center", "Beijing 100084, China" ],
    "city" : "Beijing",
    "zip_code" : "100084",
    "country" : "CN",
    "email" : [ "helpdesk@cernet.edu.cn" ],
    "phone" : [ "+86-10-6278-4049" ],
    "fax_no" : [ "+86-10-6278-5933" ],
    "admin_contacts" : [ "XL1-CN" ],
    "tech_contacts" : [ "SZ2-AP" ],
    "remarks" : [ "abuse@cernet.edu.cn" ],
    "mnt_by" : [ "MAINT-CERNET-AP" ],
    "date_updated" : "2020-09-03",
    "source" : "APNIC",
    "addressCountry" : "CHINA"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AC1685-AP",
    "name" : "ABUSE CERNETAP",
    "address" : [ "Network Center,", "FIT-3-220, Tsinghua Univ", "Beijing 100084, China" ],
    "city" : "Beijing",
    "zip_code" : "100084",
    "country" : "ZZ",
    "email" : [ "abuse@cernet.edu.cn" ],
    "abuse_mailbox" : [ "abuse@cernet.edu.cn" ],
    "phone" : [ "+86-10-62784301" ],
    "admin_contacts" : [ "CER-AP" ],
    "tech_contacts" : [ "CER-AP" ],
    "remarks" : [ "Generated from irt object IRT-CERNET-AP", "abuse@cernet.edu.cn was validated on 2026-03-05" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2026-03-05",
    "source" : "APNIC",
    "addressCountry" : "CHINA"
  } ]
}

Peers

AS Number	Description	Country
AS23910	CNGI CERNET	CN

Upstreams

AS Number	Description	Country
AS23910	CNGI CERNET	CN

Contacts

Email Contacts

helpdesk@cernet.edu.cn

Abuse Contacts

abuse@cernet.edu.cn

ASN Lookup Tool

ASN Summary