Autonomous system detail

AS1321

Announced

AS1321 announces 21 IPv4 and 10 IPv6 prefixes and peers with 16 other networks.

Summary

// analyst note
The supplied snapshot shows routing activity, but it does not establish operator identity, commercial relationships, ownership, or safety.
IPv4 prefixes
21
~6.1K addresses
IPv6 prefixes
10
announced
Peer networks
16
0 up · 0 down
IANA block
1-1876
Assigned by ARIN
[ 01 ] — Context

About this ASN.

Updated  ·  Confidence: Low  ·  3 sources  ·  How this page is checked

AS1321 is an ASN assigned by ARIN; its operator and country are Unknown from the supplied evidence. In the combined Route Views observation at 2026-11-03 14:00 UTC, across route-views2 and route-views6, it appeared with 21 IPv4 prefixes and 10 IPv6 prefixes. This is a snapshot, not proof of present-day deployment or ownership.

The snapshot estimates 5,888 IPv4 addresses and records 16 observed AS_PATH neighbours. Those neighbours show routing adjacencies in this dataset only; they do not establish verified peers, upstreams, or customer and provider relationships. The observation does not determine whether the ASN or its routes are safe, malicious, or prevalent.

For identification, compare the ASN and its prefixes with current routing data and independently verified registry or operator records. Treat any match as a lead until first-party evidence explicitly links an organization to AS1321. To investigate a particular route, inspect its prefix, origin and full AS_PATH at the time in question; this aggregate snapshot alone cannot establish route history or intent.

Registry
IANA lists AS1321 in the ARIN-assigned block; this does not identify an individual operator.
Routing snapshot
21 IPv4 prefixes, 10 IPv6 prefixes, and 16 observed AS_PATH neighbours in the combined observation at 2026-11-03 14:00 UTC from route-views2 and route-views6.
Triage
Operator, country, network type, and security status are Unknown from the supplied evidence; routing adjacency is not a commercial relationship or safety finding.
RIR
ARIN [Confirmed] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
Operator
Unknown [Unknown]
Country
Unknown [Unknown]
ASN
1321 [Confirmed] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
IPv4 prefixes
21 in the combined observation at 2026-11-03T14:00:00.000Z across route-views2 and route-views6 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
IPv4 address estimate
5888 in the combined observation at 2026-11-03T14:00:00.000Z across route-views2 and route-views6 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
IPv6 prefixes
10 in the combined observation at 2026-11-03T14:00:00.000Z across route-views2 and route-views6 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
Observed AS_PATH neighbour count
16 in the combined observation at 2026-11-03T14:00:00.000Z across route-views2 and route-views6 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
Observed AS_PATH neighbours
AS701, AS702, AS703, AS1339, AS2830, AS4642, AS7046, AS10953, AS11787, AS14799, AS16224, AS22390, AS23503, AS26425, AS26662, AS395959 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
[ 02 ] — Announced prefixes

What this network routes.

31 prefixes total · as observed by RouteViews at 2026-11-06 · one collector view, not a global census
// IPv4 prefixes21
  1. 152.196.4.0/22/22
  2. 152.196.10.0/24/24
  3. 152.196.100.0/24/24
  4. 152.196.102.0/24/24
  5. 152.196.104.0/24/24
  6. 152.196.106.0/24/24
  7. 152.196.12.0/24/24
  8. 152.196.121.0/24/24
  9. 152.196.14.0/24/24
  10. 152.196.16.0/24/24
  11. 152.196.18.0/24/24
  12. 152.196.20.0/24/24
  13. 152.196.22.0/24/24
  14. 152.196.26.0/24/24
  15. 152.196.28.0/24/24
  16. 152.196.4.0/24/24
  17. 152.196.68.0/24/24
  18. 152.196.70.0/24/24
  19. 152.196.72.0/24/24
  20. 152.196.74.0/24/24
  21. 152.196.8.0/24/24
// IPv6 prefixes10
  1. 2600:40ff:fc04::/48/48
  2. 2600:40ff:fc20::/48/48
  3. 2600:40ff:fc21::/48/48
  4. 2600:40ff:fc22::/48/48
  5. 2600:40ff:fc23::/48/48
  6. 2600:40ff:fc24::/48/48
  7. 2600:40ff:ff12::/48/48
  8. 2600:40ff:ff13::/48/48
  9. 2600:40ff:ff92::/48/48
  10. 2600:40ff:ff93::/48/48
[ 03 ] — Notable peers & upstreams

Who it talks to.

16 observed neighbours
// Notable connections16 of 16 observed

Neighbours observed by RouteViews at 2026-11-06, lowest ASN first. Relationships are inferences from the CAIDA AS Relationships Dataset, 2026-08-01, and establish no commercial arrangement; a dash means the inference did not resolve.

ASNOperatorRole
AS701 Verizon Business (MCI Communications Services) —
AS702 Verizon Communications, Inc. (Verizon Business; UUNET/MCI/WorldCom lineage) —
AS703 Verizon Business (MCI Communications Services, Inc.; legacy UUNET/MCI) —
AS1339 — —
AS2830 — —
AS4642 — —
AS7046 — —
AS10953 — —
AS11787 — —
AS14799 — —
AS16224 — —
AS22390 — —
AS23503 — —
AS26425 — —
AS26662 — —
AS395959 — —
Neighbours observed via public BGP collectors; not a complete peering list.