AS306 · 
US — United States Department of Defense (DoD)
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DNIC-ASBLK-00306-00371 · ARIN · US
Selected local snapshot coverage; not the whole Internet. BGP snapshots: ris-rrc00 11 Oct 00:00 UTC; routeviews2 11 Oct 06:00 UTC; routeviews6 11 Oct 06:00 UTC. Validator: 11 Oct 07:43 UTC. Publication-point issues: 91
Address space details
Overlapping originated prefixes counted once. IPv4 addresses: 4,492,800
IPv6 addresses: 685460939721494742058401792
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Observed originated prefixes
These are observed BGP origins, not an inventory of registered allocations or transit reachability.
0 matching prefix–origin pairs. Each pair appears once; source observations are in Details.
No matching route was observed in the available dataset.
Observed AS neighbors
58 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.
58 matching neighbors · 1–25 shown
| Network | IPv4/IPv6 | Seen in | Last observed | Details |
|---|---|---|---|---|
AS316 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS317 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS319 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS320 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS321 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS322 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS323 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS324 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS325 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS326 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS327 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS328 · US United States Department of Defense (DoD) | IPv4 | ris-rrc00, routeviews2 | 11 Oct 06:00 UTC | Source observations
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AS329 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS331 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS334 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS335 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS336 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS337 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS338 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS339 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS340 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS341 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS342 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS343 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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AS344 · US United States Department of Defense (DoD) | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 11 Oct 06:00 UTC | Source observations
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View observed neighbor graph (up to 15 AS nodes)
Lines mean observed adjacency, with no commercial direction inferred. The table above provides the same evidence and source times.
Showing 14 of 58 matching neighbors, in table sort order, independent of table page.
Peering & locations
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Registry information
ARIN · fetched 11 Oct 00:13 UTC
- Resource name
- DNIC-ASBLK-00306-00371
- Handle
- AS306
- RDAP country
- Not supplied
- ASN
- 306
- ASN range end
- 371
Registered organizations
Last Changed: 12 Sep 2025 13:52 UTC
Registration: 30 Jun 1989 04:00 UTC
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.
- AS306–AS371 · arin · assigned · ASN allocation country: US · Allocation date: 1989-06-30 — NRO/RIR data · snapshot 10 Oct 00:00 UTC
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.
No retained changes are available for this resource.
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 |
|---|---|---|---|---|
routeviews2 | 11 Oct 06:00 UTC | IPv4 | 275 | 140.192.8.16/IPv4 |
routeviews6 | 11 Oct 06:00 UTC | IPv6 | 57 | 2406:840:feed:2::1/IPv6 |
routeviews2 | 11 Oct 04:00 UTC | IPv4 | 275 | 140.192.8.16/IPv4 |
routeviews6 | 11 Oct 04:00 UTC | IPv6 | 57 | 2406:840:feed:2::1/IPv6 |
ris-rrc00 | 11 Oct 00:00 UTC | IPv4 | 275 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |
ris-rrc00 | 11 Oct 00:00 UTC | IPv6 | 57 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |
ris-rrc00 | 10 Oct 16:00 UTC | IPv4 | 275 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |
ris-rrc00 | 10 Oct 16:00 UTC | IPv6 | 57 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |