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If you are scraping this block for the prefixes that a AS originates, please use the data dumps in https://bgp.tools/kb/api and cache them

	Prefix	Description
	41.138.128.0/24	Used
	41.138.128.0/19	Chinguitel SA
	41.138.129.0/24	Used
	41.138.131.0/24	Used
	41.138.132.0/24	Used
	41.138.133.0/24	Used
	41.138.134.0/24	GSM
	41.138.135.0/24	GSM
	41.138.136.0/24	Used
	41.138.142.0/24	Chinguitel SA
	41.138.143.0/24	Chinguitel SA
	41.138.144.0/24	Used
	41.138.145.0/24	Used
	41.138.147.0/24	Used
	41.138.148.0/24	Used
	41.138.149.0/24	Used
	41.138.150.0/24	Used
	41.138.151.0/24	Used
	41.138.152.0/24	Used
	41.138.153.0/24	Used
	41.138.154.0/24	Used
	41.138.155.0/24	Used
	41.138.156.0/24	Used
	41.138.158.0/24	Used
	197.231.0.0/19	Chinguitel SA
	197.231.1.0/24	Chinguitel SA
	197.231.2.0/24	Chinguitel SA
	197.231.3.0/24	Chinguitel SA
	197.231.4.0/24	Chinguitel SA
	197.231.5.0/24	Chinguitel SA
	197.231.6.0/24	Chinguitel SA
	197.231.7.0/24	Chinguitel SA
	197.231.8.0/24	Chinguitel SA
	197.231.10.0/24	Chinguitel SA
	197.231.11.0/24	Chinguitel SA
	197.231.12.0/24	Chinguitel SA
	197.231.13.0/24	Chinguitel SA
	197.231.14.0/24	Chinguitel SA
	197.231.15.0/24	Chinguitel SA
	197.231.16.0/21	Chinguitel SA
	197.231.24.0/24	Chinguitel SA
	197.231.25.0/24	Chinguitel SA
	197.231.26.0/24	Chinguitel
	197.231.28.0/24	Chinguitel SA
	197.231.29.0/24	Chinguitel SA
	197.231.30.0/24	Chinguitel
	197.231.31.0/24	Chinguitel SA
	2c0f:2540::/32	v6 block for allocation to African organisations

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS204523	Expresso Telecom Group Ltd	✔	✔
	AS8346	SONATEL-AS Autonomous System	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS204523	Expresso Telecom Group Ltd	✔	✔
	AS8346	SONATEL-AS Autonomous System	✔	✘
	AS328549	SAHEL TELECOM LIBERIA	✔	✘

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Downstreams

	ASN	Description	IPv4	IPv6
	AS328549	SAHEL TELECOM LIBERIA	✔	✘

% This is the AfriNIC Whois server.
% The AFRINIC whois database is subject to  the following terms of Use. See https://afrinic.net/whois/terms

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to 'AS37541'

% No abuse contact registered for AS37541

aut-num:        AS37541
as-name:        CHINGUITEL
descr:          Chinguitel S.A
status:         ASSIGNED
org:            ORG-CS4-AFRINIC
admin-c:        Rae2-AFRINIC
admin-c:        BOM2-AFRINIC
tech-c:         Rae2-AFRINIC
mnt-lower:      CHINGUITEL-MNT
mnt-routes:     CHINGUITEL-MNT
mnt-by:         AFRINIC-HM-MNT
source:         AFRINIC # Filtered

organisation:   ORG-CS4-AFRINIC
org-name:       Chinguitel S.A
org-type:       LIR
country:        MR
address:        Tavragh-Zaina ILOT , A 42-142
address:        Nouakchott
phone:          tel:+222-25-00-20-00
fax-no:         tel:+222-25-29-55-90
admin-c:        Rae2-AFRINIC
admin-c:        BOM2-AFRINIC
tech-c:         Rae2-AFRINIC
mnt-ref:        AFRINIC-HM-MNT
mnt-ref:        CHINGUITEL-MNT
mnt-by:         AFRINIC-HM-MNT
source:         AFRINIC # Filtered

person:         Bechir Ould Mounir
address:        Tevragh Zeina, Ilot :ZRB: 92,Nouakchott, Mauritania
phone:          tel:+222-22-00-02-05
nic-hdl:        BOM2-AFRINIC
mnt-by:         GENERATED-8G5HDJJZ9VCBZKBLUMBWAUFAYWSFOWDE-MNT
source:         AFRINIC # Filtered

person:         Rasheed awad elkarim
address:        Tavragh-Zaina ILOT , A 42-142 Nouakchott  Mauritania
address:        Nouakchott
address:        Mauritania
phone:          tel:+222-25-00-20-00
nic-hdl:        Rae2-AFRINIC
mnt-by:         GENERATED-LXWO1KUAAVYO7IFIKZOOKXMCO7HMXJME-MNT
source:         AFRINIC # Filtered

Last Update: 2022-09-16T04:28:34Z UTC / (Click here to force a refresh)

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-expresso_telecom_group	37
AFRINIC	as-expresso_telecom_group	37
RADB	as-mtnbusiness-transit	171
RIPE	as-expresso_telecom_group	37