asn.dev

Routing security

AS400337 ASN-NHB

Unclassified ARIN

RPKI valid 100% 31 of 31 announcements
RPKI invalid 0 none
No ROA 0 not covered by any ROA
IRR registered 100% 0 missing · 0 other origin
ROAs 7 authorising this AS

Announcements

What this network originates

31 observed

Every prefix observed with AS400337 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
38.7.152.0/22RPKI validIRR51
38.51.144.0/22RPKI validIRR51
38.110.240.0/20RPKI validIRR51
38.110.240.0/21RPKI validIRR covering51
38.110.240.0/22RPKI validIRR covering51
38.110.244.0/22RPKI validIRR covering51
38.110.248.0/21RPKI validIRR covering51
38.110.248.0/22RPKI validIRR covering51
38.110.252.0/22RPKI validIRR covering51
134.49.96.0/19RPKI validIRR51
134.49.96.0/22RPKI validIRR covering51
134.49.100.0/22RPKI validIRR covering51
134.49.104.0/22RPKI validIRR covering51
134.49.108.0/22RPKI validIRR covering51
134.49.112.0/22RPKI validIRR covering51
134.49.116.0/22RPKI validIRR covering51
134.49.120.0/22RPKI validIRR covering51
134.49.124.0/22RPKI validIRR covering51
163.245.160.0/19RPKI validIRR51
163.245.160.0/20RPKI validIRR covering51
163.245.160.0/22RPKI validIRR covering51
163.245.164.0/22RPKI validIRR covering51
163.245.168.0/22RPKI validIRR covering51
163.245.172.0/22RPKI validIRR covering51
163.245.176.0/20RPKI validIRR covering51
163.245.176.0/22RPKI validIRR covering51
163.245.180.0/22RPKI validIRR covering51
163.245.184.0/22RPKI validIRR covering51
163.245.188.0/22RPKI validIRR covering51
206.225.31.0/24RPKI validIRR51
2607:9740::/32RPKI validIRR33

RPKI · ROAs

Route origin authorisations

7 ROAs

Signed statements by address holders that AS400337 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
38.7.152.0/22/22ARIN
38.51.144.0/22/22ARIN
38.110.240.0/20/24ARIN
134.49.96.0/19/24ARIN
163.245.160.0/19/24ARIN
206.225.31.0/24/24ARIN
2607:9740::/32/33ARIN

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

RPKI · ASPA

Declared transit providers

2 declared

This network has signed an ASPA record naming its transit providers. Each is compared against the upstreams observed in routing paths.

ASNetworkASPARouting paths
AS1299Arelion Sweden ABDeclaredObserved
AS399898Conexon ConnectDeclaredObserved

An observed upstream that is not declared is not necessarily a leak: our upstream inference cannot tell a transit provider from a peer seen in the same position. A declared provider that is never observed is usually a backup path.

IRR

Registered route objects

11 objects · 2 not announced

Route objects naming AS400337 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
66.231.210.0/24RADBProxy route object for NH Broadband, LLCMAINT-SOVER-NOC2023-11-13Not announced
66.231.211.0/24RADBProxy route object for NH Broadband, LLCMAINT-SOVER-NOC2023-11-13Not announced
38.7.152.0/22ARINObject Registered for Cogent Customer - NH BroadbandMNT-COGC2026-09-23Announced
38.7.152.0/22RADBRoute Registered for Cogent Communications Customer - NH BroadbandMAINT-AS4003372024-10-16Announced
38.51.144.0/22ARINObject Registered for Cogent Customer - NH BroadbandMNT-COGC2026-09-23Announced
38.51.144.0/22RADBRoute Registered for Cogent Communications Customer - NH BroadbandMAINT-AS4003372023-11-13Announced
38.110.240.0/20ARINRoute Registered for Cogent Communications Customer - NH BroadbandMNT-COGC2026-05-26Announced
134.49.96.0/19ARIN579 Tenney Mountain HighwayMNT-NBL-822026-09-09Announced
163.245.160.0/19ARIN579 Tenney Mountain HighwayMNT-NBL-822026-09-09Announced
206.225.31.0/24ARIN579 Tenney Mountain HighwayMNT-NBL-822026-09-09Announced
2607:9740::/32ARIN579 Tenney Mountain HighwayMNT-NBL-822026-09-09Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS400337 directly show who expects to carry it.

AS-setWhereRelationship
AS-400337ARINLists AS400337 as a direct member
AS-HURRICANEV6RADBLists AS400337 as a direct member
AS-NHBBARINLists AS400337 as a direct member
AS-TVCARINLists AS400337 as a direct member
AS-UDOSRADBLists AS400337 as a direct member
AS13536:AS-CONEARINLists AS400337 as a direct member
AS3770:AS-ALLARINLists AS400337 as a direct member
AS399898:AS-CUSTOMERSARINLists AS400337 as a direct member

RPKI from rpki-client, validated 2026-10-28 12:15 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-28. Cross-check on bgp.he.net.