asn.dev

Routing security

AS1742 HARVARD-UNIV

Unclassified ARIN

RPKI valid 89% 16 of 18 announcements
RPKI invalid 0 none
No ROA 2 not covered by any ROA
IRR registered 100% 0 missing · 0 other origin
ROAs 17 authorising this AS

Announcements

What this network originates

18 observed

Every prefix observed with AS1742 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
131.142.0.0/16No ROAIRR56
2620:32:8000::/48No ROAIRR31
65.112.0.0/20RPKI validIRR56
67.134.204.0/22RPKI validIRR56
128.103.0.0/16RPKI validIRR56
140.247.0.0/16RPKI validIRR56
140.247.111.0/24RPKI validIRR27
140.247.152.0/24RPKI validIRR27
140.247.174.0/24RPKI validIRR27
140.247.179.128/26RPKI validIRR2
140.247.236.0/24RPKI validIRR27
192.5.66.0/24RPKI validIRR56
192.54.223.0/24RPKI validIRR56
192.131.102.0/24RPKI validIRR56
199.94.60.0/22RPKI validIRR53
2602:fca9::/36RPKI validIRR31
2607:fb60::/32RPKI validIRR32
2607:fb60:2404::/46RPKI validIRR19

RPKI · ROAs

Route origin authorisations

17 ROAs

Signed statements by address holders that AS1742 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
65.112.0.0/20/24ARIN
67.134.204.0/22/24ARIN
128.103.0.0/16/24ARIN
140.247.0.0/16/24ARIN
140.247.179.128/26/26ARIN
192.5.66.0/24/24ARIN
192.43.216.0/24/24ARIN
192.54.223.0/24/24ARIN
192.131.102.0/24/24ARIN
199.94.0.0/19/24ARIN
199.94.32.0/20/24ARIN
199.94.48.0/24/24ARIN
199.94.60.0/22/24ARIN
2602:fca9::/36/36ARIN
2607:fb60::/32/32ARIN
2607:fb60:2400::/40/40ARIN
2607:fb60:2404::/46/46ARIN

ROA-based and RPKI-valid-only prefix lists for routers are on asn.ipinfo.app.

RPKI · ASPA

Declared transit providers

No ASPA record This network has not published an ASPA object. ASPA lets a network sign the list of its transit providers, so routers can reject paths that route through anyone else (route leaks). Only a few thousand networks publish one so far, so its absence is normal.

IRR

Registered route objects

39 objects · 6 not announced

Route objects naming AS1742 as origin, across RADb, the RIR registries, ALTDB and NTTCOM. Objects that are registered but not announced come first: a stale object lets anyone who can spoof this origin through an IRR-built filter.

PrefixSourceDescriptionMaintainerChangedRouting
192.43.216.0/24ARINHUIT Network ServicesMNT-HARVAR-Z2024-07-11Not announced
216.52.8.0/23RADBPNAP-WDC002 1742MAINT-AS18282023-11-13Not announced
216.52.24.0/23RADBPNAP-WDC002 1742MAINT-AS18282023-11-13Not announced
216.52.72.0/22RADBPNAP-WDC002 1742MAINT-AS18282023-11-13Not announced
2607:fb60:2400::/40ARINHUIT Network ServicesMNT-HARVAR2024-07-11Not announced
2607:fb60:2400::/40RADB—MAINT-AS17422024-07-08Not announced
65.112.0.0/20ARINHUIT Network ServicesMNT-HARVAR2024-07-15Announced
65.112.0.0/20RADBPresident and Fellows of Harvard ColllegeMAINT-AS17422023-11-13Announced
67.134.204.0/22ARINHUIT Network ServicesMNT-HARVAR2024-07-15Announced
67.134.204.0/22RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
128.103.0.0/16ARINHUIT Network ServicesMNT-HARVAR-Z2024-07-11Announced
128.103.0.0/16RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
131.142.0.0/16RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
140.247.0.0/16ARINHUIT Network ServicesMNT-HARVAR-Z2024-07-11Announced
140.247.0.0/16RADBPresidents and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
140.247.111.0/24ARINHUIT Network ServicesMNT-HARVAR-Z2024-07-11Announced
140.247.111.0/24RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
140.247.152.0/24ARINHUIT Network ServicesMNT-HARVAR-Z2024-07-11Announced
140.247.152.0/24RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
140.247.174.0/24ARINHUIT Network ServicesMNT-HARVAR-Z2024-07-11Announced
140.247.174.0/24RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
140.247.179.128/26ARINHUIT Network ServicesMNT-HARVAR-Z2024-07-11Announced
140.247.179.128/26RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
140.247.236.0/24ARINHUIT Network ServicesMNT-HARVAR-Z2024-07-11Announced
140.247.236.0/24RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
192.5.66.0/24ARINHUIT Network ServicesMNT-HARVAR-Z2024-07-11Announced
192.5.66.0/24RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
192.54.223.0/24ARINHUIT Network ServicesMNT-HARVAR-Z2024-07-11Announced
192.54.223.0/24RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
192.131.102.0/24ARINHUIT Network ServicesMNT-HARVAR-Z2024-07-11Announced
192.131.102.0/24RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
199.94.60.0/22ARINHUIT Network ServicesMNT-HARVAR2024-07-11Announced
199.94.60.0/22RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
2602:fca9::/36ARINHUIT Network ServicesMNT-HARVAR2024-07-09Announced
2602:fca9::/36RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
2607:fb60::/32ARINHUIT Network ServicesMNT-HARVAR2024-07-11Announced
2607:fb60::/32RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced
2607:fb60:2404::/46ARINHarvard UniversityMNT-HARVAR2025-07-24Announced
2620:32:8000::/48RADBPresident and Fellows of Harvard CollegeMAINT-AS17422023-11-13Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS1742 directly show who expects to carry it.

AS-setWhereRelationship
AS-CTBC-CUSTOMERS218RADBLists AS1742 as a direct member
AS-HARVRADBLists AS1742 as a direct member
AS10578:AS-HARVARDRADBLists AS1742 as a direct member
AS11164:AS-PARTICIPANTSRADBLists AS1742 as a direct member
AS11537:AS-PARTICIPANTSRADBLists AS1742 as a direct member
AS174:AS-COGC-007RADBLists AS1742 as a direct member
AS198949:AS-SDRADBLists AS1742 as a direct member

RPKI from rpki-client, validated 2026-10-31 12:02 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-31. Cross-check on bgp.he.net.