AS3527 National Institutes of Health 🇺🇸 US

Announcing 16 prefixes, seen at the RIS collectors.

IPv4 prefixes
15
345,856 (1,351 × /24)
IPv6 prefixes
1
32 × /48
Upstreams
2
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it

Registry and operator data

AS number
AS3527
Name
National Institutes of Health
Organisation
National Institutes of Health
Country
🇺🇸 US
RIR
ARIN
Allocated
1994-04-07
Scope
Not Disclosed
PeeringDB
net/40927

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

13 valid (81.3%) 0 invalid (0.0%) 3 no ROA (18.8%)

Announced prefixes

16 in total

Prefix RPKI Peers Sample path First seen
128.231.0.0/16 v4 RPKI valid 43 1490711164108863527 2026-09-18
128.231.3.0/24 v4 RPKI valid 42 1490711164108863527 2026-09-18
128.231.245.0/24 v4 RPKI valid 42 1490711164108863527 2026-09-18
137.187.0.0/16 v4 RPKI valid 43 1490711164108863527 2026-09-18
156.40.0.0/16 v4 no ROA 43 1490711164108863527 2026-09-18
157.98.0.0/16 v4 no ROA 43 1490711164108863527 2026-09-18
162.99.224.0/19 v4 no ROA 42 37721335615029190503527 2026-09-18
165.112.0.0/16 v4 RPKI valid 43 1490711164108863527 2026-09-18
165.112.0.0/20 v4 RPKI valid 3 382292449011537108863527 2026-09-18
165.112.0.0/21 v4 RPKI valid 3 382292449011537108863527 2026-09-18
165.112.136.0/21 v4 RPKI valid 3 382292449011537108863527 2026-09-18
192.231.145.0/24 v4 RPKI valid 43 1490711164108863527 2026-09-18
192.231.146.0/23 v4 RPKI valid 42 1490711164108863527 2026-09-18
192.231.146.0/24 v4 RPKI valid 42 37721335615029190503527 2026-09-18
192.231.147.0/24 v4 RPKI valid 43 37721335615029190503527 2026-09-18
2607:f220:400::/43 v6 RPKI valid 35 37721335615029190503527 2026-09-18