ResearchRouting table, looking glass, RPKI & IRR

2001:253::/32 China Education and Research Network (CERNET)

Announced by AS38272 China Education and Research Network (CERNET). RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 2001:253::/32

Prefix
2001:253::/32
Origin
AS38272 FITI-AS-BKB
RPKI
RPKI valid
Size
4,294,967,296 /64s
Less specific
none
More specifics
39
IRR route objects
1 exact, 0 covering
In RouteViews
2026-10-12 12:08 UTC
Paths

How 2001:253::/32 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 4538 23911 38255 38272
OriginAS38272 China Education and Research Network (CERNET)
Origin codeIGP
Communities174:21001 174:22013 36601:150 36601:2001
Updated4d 12h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 6939 38255×2 38272
OriginAS38272 China Education and Research Network (CERNET)
Origin codeIGP
Communities903:13760
Updated4d 21h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 38255×2 38272
OriginAS38272 China Education and Research Network (CERNET)
Origin codeIGP
Communities36295:100
Updated4d 20h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 38255×2 38272
OriginAS38272 China Education and Research Network (CERNET)
Origin codeIGP
Communitiesnone
Updated4d 21h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 4538 23911 38255 38272
OriginAS38272 China Education and Research Network (CERNET)
Origin codeIGP
Communities174:21001 174:22013 36295:100 36295:174
Updated8d 14h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS38272 to originate 2001:253::/32 up to /32. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
2001:253::/32/32AS23910 CNGI-CERNET2-AS-APAPNIC
2001:253::/32/32AS38272 FITI-AS-BKBAPNIC
IRR

Route objects

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

RouteOriginSourceDescriptionMaintained by
2001:253::/32AS38272 FITI-AS-BKBAPNICChina Education and Research Network (CERNET) FIT 3-220, Tsinghua UniversityMAINT-CERNET-AP
More specific

Prefixes inside 2001:253::/32

39 announced prefixes fall inside this one.

Show the 39 prefixes
2001:253:201::/48 AS142067 AS142067-12001:253:202::/48 AS142068 AS142068-22001:253:203::/48 AS142069 AS142069-32001:253:204::/48 AS142070 AS142070-42001:253:205::/48 AS142071 AS142071-52001:253:206::/48 AS142072 AS142072-62001:253:207::/48 AS142073 AS142073-72001:253:208::/48 AS142074 AS142074-82001:253:209::/48 AS142075 AS142075-92001:253:210::/48 AS142076 AS142076-102001:253:211::/48 AS142077 AS142077-112001:253:212::/48 AS142078 AS142078-122001:253:213::/48 AS142079 AS142079-132001:253:214::/48 AS142080 AS142080-142001:253:215::/48 AS142081 AS142081-152001:253:216::/48 AS142082 AS142082-162001:253:217::/48 AS142083 AS142083-172001:253:218::/48 AS142084 AS142084-182001:253:219::/48 AS142085 AS142085-192001:253:220::/48 AS142086 AS142086-202001:253:221::/48 AS142087 AS142087-212001:253:222::/48 AS142088 AS142088-222001:253:223::/48 AS142089 AS142089-232001:253:224::/48 AS142090 AS142090-242001:253:225::/48 AS142091 AS142091-252001:253:226::/48 AS142092 AS142092-262001:253:227::/48 AS142093 AS142093-272001:253:228::/48 AS142094 AS142094-282001:253:229::/48 AS142095 AS142095-292001:253:230::/48 AS142096 AS142096-302001:253:231::/48 AS142097 AS142097-312001:253:232::/48 AS142098 AS142098-322001:253:233::/48 AS142099 AS142099-332001:253:234::/48 AS142100 AS142100-342001:253:235::/48 AS142101 AS142101-352001:253:236::/48 AS142102 AS142102-362001:253:238::/48 AS142104 AS142104-382001:253:239::/48 AS142105 AS142105-392001:253:240::/48 AS142106 AS142106-40
Tools

Check 2001:253::/32 live

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