ResearchRouting table, looking glass, RPKI & IRR

47.79.72.0/21 Alibaba (US) Technology Co., Ltd.

Announced by AS45102 Alibaba (US) Technology Co., Ltd. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 47.79.72.0/21

Prefix
47.79.72.0/21
Origin
AS45102 ALIBABA-CN-NET
RPKI
RPKI valid
Size
2,048 addresses
Less specific
47.79.64.0/20 AS45102 ALIBABA-CN-NET
More specifics
0
IRR route objects
2 exact, 13 covering
In RouteViews
2026-10-12 20:02 UTC
Paths

How 47.79.72.0/21 is reached

Every path our looking glass collectors hold for this exact prefix. Open one for its attributes, or see them all side by side in the looking glass.

AS36601 TNT (TNT - Tampa, FL)Collector-1-TAMPA-FL36601 174 3491 45102
OriginAS45102 Alibaba (US) Technology Co., Ltd.
Origin codeIGP
Communities174:21000 174:22013 36601:150 36601:174 36601:2001
Updated4d 19h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 2914 45102
OriginAS45102 Alibaba (US) Technology Co., Ltd.
Origin codeIGP
Communities903:900 903:13760
Updated5d 4h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 45102
OriginAS45102 Alibaba (US) Technology Co., Ltd.
Origin codeIGP
Communities36295:100
Updated5d 4h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 45102
OriginAS45102 Alibaba (US) Technology Co., Ltd.
Origin codeIGP
Communitiesnone
Updated5d 4h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 3491 45102
OriginAS45102 Alibaba (US) Technology Co., Ltd.
Origin codeIGP
Communities174:21000 174:22013 36295:100 36295:174
Updated5d 20h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS45102 to originate 47.79.0.0/16 up to /24. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
47.79.0.0/16/24AS45102 ALIBABA-CN-NETARIN
47.79.0.0/16/24AS134963 ASEPL-AS-APARIN
IRR

Route objects

Registered in the IRR for this prefix and the ones covering it. Look it up live.

RouteOriginSourceDescriptionMaintained by
47.79.72.0/21AS45102 ALIBABA-CN-NETNTTCOMProxy-registered route objectMAINT-AS9304
47.79.72.0/21AS45102 ALIBABA-CN-NETRADBProxy-registered route objectMAINT-HGC-INTL
47.79.64.0/20 coveringAS45102 ALIBABA-CN-NETNTTCOMProxy-registered route objectMAINT-AS9304
47.79.64.0/20 coveringAS45102 ALIBABA-CN-NETRADBProxy-registered route objectMAINT-HGC-INTL
47.79.64.0/19 coveringAS45102 ALIBABA-CN-NETNTTCOMProxy-registered route objectMAINT-AS9304
47.79.64.0/19 coveringAS45102 ALIBABA-CN-NETRADBProxy-registered route objectMAINT-HGC-INTL
47.79.64.0/18 coveringAS45102 ALIBABA-CN-NETNTTCOMProxy-registered route objectMAINT-AS9304
47.79.64.0/18 coveringAS45102 ALIBABA-CN-NETRADBProxy-registered route objectMAINT-HGC-INTL
47.79.0.0/17 coveringAS45102 ALIBABA-CN-NETNTTCOMProxy-registered route objectMAINT-AS9304
47.79.0.0/17 coveringAS45102 ALIBABA-CN-NETRADBProxy-registered route objectMAINT-HGC-INTL
47.79.0.0/16 coveringAS45102 ALIBABA-CN-NETNTTCOMProxy-registered route objectMAINT-AS9304
47.78.0.0/15 coveringAS45102 ALIBABA-CN-NETNTTCOMProxy-registered route objectMAINT-AS9304
47.78.0.0/15 coveringAS45102 ALIBABA-CN-NETRADBProxy-registered route objectMAINT-HGC-INTL
47.76.0.0/14 coveringAS45102 ALIBABA-CN-NETNTTCOMProxy-registered route objectMAINT-AS9304
47.76.0.0/14 coveringAS45102 ALIBABA-CN-NETRADBkaopucloudMAINT-AS8966
Less specific

Covering prefixes

Announced prefixes that contain this one, most specific first.

47.79.64.0/20 AS45102 ALIBABA-CN-NET
Tools

Check 47.79.72.0/21 live

Looking glassIP to ASN APIRPKI APIIRR API