AS1540 · US — DNIC-ASBLK-01534-01546 - Headquarters, USAISC

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DNIC-ASBLK-01534-01546 - Headquarters, USAISC · · US

Identity source

AS1540 ·

US DNIC-ASBLK-01534-01546 - Headquarters, USAISC

NRO allocation data

1,218IPv4 prefixes

48IPv6 prefixes

5Observed neighbors

RPKIValid: 0 Invalid: 0 Not found: 1266 Unknown: 0

Selected local snapshot coverage; not the whole Internet. BGP snapshots: ris-rrc00 11 Oct 08:00 UTC; routeviews2 11 Oct 08:00 UTC; routeviews6 11 Oct 08:00 UTC. Validator: 11 Oct 09:23 UTC. Publication-point issues: 89

Address space details

Overlapping originated prefixes counted once. IPv4 addresses: 6,398,208

IPv6 addresses: 58028439341502200385896448

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Observed originated prefixes

These are observed BGP origins, not an inventory of registered allocations or transit reachability.

1266 matching prefix–origin pairs. Each pair appears once; source observations are in Details.

Prefix	RPKI	Last observed	Details
6.16.52.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.66.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.67.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.70.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.71.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.72.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.73.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.80.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.81.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.90.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.91.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.92.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.93.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.94.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.95.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.96.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.97.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.100.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.101.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.102.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.103.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.104.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.105.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.106.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found
6.16.107.0/24	Not Found	11 Oct 08:00 UTC	2 source observations ris-rrc00 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found routeviews2 · 2026-10-11T08:00:00+00:00 · 1 selected peers · RPKI not_found

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AS connectivity

5 unique neighbors in the selected local snapshots. This is the available collector dataset, not a complete map of the Internet. Adjacency does not establish upstream service or peering.

Open AS Graph Explorer

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Darker nodes = larger inferred customer cone. CAIDA IPv4 customer cone (includes the AS itself); unknown / IPv6 cone is gray.
Arrow = provider → customer, not traffic direction. Purple: provider/customer · teal: peer · gray: unknown/mixed. Solid: observed BGP adjacency · dashed: inferred only. A graph path is not an observed BGP route or a promise of transit.

Find node (also searches grouped networks)

5 matching neighbors · 1–5 shown

Network	IPv4/IPv6	Seen in	Last observed	Details
AS306 · US United States Department of Defense (DoD)	IPv4, IPv6	ris-rrc00, routeviews2, routeviews6	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC ris-rrc00 · IPv6 · 11 Oct 08:00 UTC routeviews6 · IPv6 · 11 Oct 08:00 UTC
AS367 · US DNIC-ASBLK-00306-00371 - United States Department of Defense DoD	IPv4, IPv6	ris-rrc00, routeviews2, routeviews6	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC ris-rrc00 · IPv6 · 11 Oct 08:00 UTC routeviews6 · IPv6 · 11 Oct 08:00 UTC
AS588 · US DIRECTRON - Headquarters, USAISC	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS1493 · US DNIC-ASBLK-01492-01493 - Headquarters, USAISC	IPv4	ris-rrc00, routeviews2	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC
AS27064 · US DNIC-ASBLK-27032-27159 - United States Department of Defense DoD	IPv4, IPv6	ris-rrc00, routeviews2, routeviews6	11 Oct 08:00 UTC	Source observations ris-rrc00 · IPv4 · 11 Oct 08:00 UTC routeviews2 · IPv4 · 11 Oct 08:00 UTC ris-rrc00 · IPv6 · 11 Oct 08:00 UTC routeviews6 · IPv6 · 11 Oct 08:00 UTC

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Peering & locations

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Registry information

No cached registry response is available yet. Routing origins above are not a substitute for registry ownership.

Allocation statistics

NRO/RIR delegated-extended records describe allocation or assignment ranges. They do not prove a BGP announcement or replace more-specific RDAP registration information. Country is the allocation record’s registration country, not the physical location of every address.

AS1534–AS1546 · arin · assigned · ASN allocation country: US · Allocation date: 2004-05-12 — NRO/RIR data · snapshot 10 Oct 00:00 UTC

NRO data and format

Prefix count history

Local observation changes

Only comparable successful snapshots are compared. First imports, changed peer coverage and collection gaps are baselines, not new global routes or withdrawals. RPKI transition history is not available before it has been recorded.

11 Oct 06:00 UTC · No longer observed in selected snapshots · 143.74.28.0/23
1 source observations
- routeviews2 · imported 11 Oct 06:38 UTC
11 Oct 04:00 UTC · First observed by pjhtech · 158.11.228.0/24
1 source observations
- routeviews2 · imported 11 Oct 04:38 UTC
11 Oct 04:00 UTC · First observed by pjhtech · 158.11.228.0/23
1 source observations
- routeviews2 · imported 11 Oct 04:38 UTC
11 Oct 02:00 UTC · No longer observed in selected snapshots · 158.11.228.0/24
1 source observations
- routeviews2 · imported 11 Oct 02:40 UTC
11 Oct 02:00 UTC · First observed by pjhtech · 143.74.28.0/23
1 source observations
- routeviews2 · imported 11 Oct 02:40 UTC
11 Oct 02:00 UTC · No longer observed in selected snapshots · 158.11.228.0/23
1 source observations
- routeviews2 · imported 11 Oct 02:40 UTC
11 Oct 00:00 UTC · First observed by pjhtech · 214.37.215.0/24
1 source observations
- ris-rrc00 · imported 11 Oct 00:37 UTC
11 Oct 00:00 UTC · First observed by pjhtech · 143.249.90.0/24
1 source observations
- ris-rrc00 · imported 11 Oct 00:37 UTC
10 Oct 22:00 UTC · First observed by pjhtech · 214.37.215.0/24
1 source observations
- routeviews2 · imported 10 Oct 22:36 UTC
10 Oct 20:00 UTC · First observed by pjhtech · 143.249.90.0/24
1 source observations
- routeviews2 · imported 10 Oct 20:31 UTC
10 Oct 16:00 UTC · No longer observed in selected snapshots · 214.37.194.0/24
1 source observations
- ris-rrc00 · imported 10 Oct 16:34 UTC
10 Oct 16:00 UTC · No longer observed in selected snapshots · 160.136.47.0/24
1 source observations
- ris-rrc00 · imported 10 Oct 16:34 UTC
10 Oct 16:00 UTC · No longer observed in selected snapshots · 160.136.35.0/24
1 source observations
- ris-rrc00 · imported 10 Oct 16:34 UTC

Retained local prefix-count observations

Separate collector series. Missing rows are not zero. Peer-set changes are separate coverage, not a continuous trend.

Source	Snapshot	Family	Prefixes	Peer coverage
routeviews6	11 Oct 08:00 UTC	IPv6	48	2406:840:feed:2::1/IPv6
ris-rrc00	11 Oct 08:00 UTC	IPv4	1218	2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00	11 Oct 08:00 UTC	IPv6	48	2a00:5884::6/IPv6, 89.234.186.6/IPv4
routeviews2	11 Oct 08:00 UTC	IPv4	1218	140.192.8.16/IPv4
routeviews2	11 Oct 06:00 UTC	IPv4	1218	140.192.8.16/IPv4
routeviews6	11 Oct 06:00 UTC	IPv6	48	2406:840:feed:2::1/IPv6
ris-rrc00	11 Oct 00:00 UTC	IPv4	1218	2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00	11 Oct 00:00 UTC	IPv6	48	2a00:5884::6/IPv6, 89.234.186.6/IPv4