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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
	45.121.88.0/24	Hutchison Telecommunications Lanka (Private) Limited
	45.121.89.0/24	Hutchison Telecommunications Lanka (Private) Limited
	45.121.90.0/24	Hutchison Telecommunications Lanka (Private) Limited
	45.121.91.0/24	Hutchison Telecommunications Lanka (Private) Limited
	103.21.164.0/24	234, Galle Road, Colombo 4
	103.21.165.0/24	234, Galle Road, Colombo 4
	103.21.166.0/24	234, Galle Road, Colombo 4
	103.21.167.0/24	234, Galle Road, Colombo 4
	2405:6b00::/48	234, Galle Road, Colombo 4

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS15412	Flag Telecom UK Limited	✔	✔
	AS45489	Sri Lanka Telecom PLC	✔	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS45489	Sri Lanka Telecom PLC	✔	✔
	AS15412	Flag Telecom UK Limited	✔	✔
	AS20473	The Constant Company, LLC	✔	✔
	AS2635	Automattic, Inc	✔	✔
	AS139009	Windstream Communication Limited	✔	✘
	AS149251	Froze Communications Private Limited	✔	✔
	AS15169	Google LLC	✔	✘
	AS36236	NetActuate, Inc	✔	✔
	AS24482	SG.GS	✔	✔
	AS13335	Cloudflare, Inc.	✔	✔
	AS152565	JOY SERVICES	✔	✔
	AS153522	Joy Data Services	✔	✘
	AS141253	Hyosec Solutions Private Limited	✔	✘

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Downstreams

	ASN	Description	IPv4	IPv6
	AS20473	The Constant Company, LLC	✔	✘

aut-num:        AS132447
as-name:        HUTCHISON-LK
descr:          234, Galle Road, Colombo 4
country:        LK
org:            ORG-HTLL1-AP
admin-c:        HTLP1-AP
tech-c:         HTLP1-AP
abuse-c:        AH1091-AP
mnt-lower:      MAINT-HUTCHISON-LK
mnt-routes:     MAINT-HUTCHISON-LK
mnt-by:         APNIC-HM
mnt-irt:        IRT-HUTCHISON-LK
last-modified:  2020-08-19T13:06:47Z
source:         APNIC


organisation:   ORG-HTLL1-AP
org-name:       Hutchison Telecommunications Lanka (Private) Limited
org-type:       LIR
country:        LK
address:        234, Galle Road, Colombo 4
phone:          +94-788-632632
fax-no:         +94-788-632188
# Email removed, Log into bgp.tools to see whois emails
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:16:04Z
source:         APNIC

Last Update: 2025-12-25T03:22:14Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
APNIC	as18001:as-transit	22
RIPE	as-flagp	37580
RADB	as-sltnet-transit	31
APNIC	as59200:as-decix-bom	13008
RADB	as3491:as-customers-test	67927
RADB	as-hurricane	24736
RADB	as-slt-global	154
RADB	as-hurricanev6	20185
RADB	as-tmnet-customers	2889
RADB	as-telstra-intl-customers-4637	1599
APNIC	as9498:as-bharti-in	67362
RADB	as-kddcustomer2	8206
RIPE	as-flagt	37580
RADB	as3491:as-customers-ap	68989
RADB	as-emix	25830
RADB	as5087:as-lankacom-transit	6