Autonomous system detail

AS1201

Announced

AS1201 announces 33 IPv4 and 0 IPv6 prefixes and peers with 2 other networks.

Summary

// analyst note
Combined observation from route-views2 and route-views6 at 2026-11-03T14:00:00Z. AS_PATH neighbours are not verified peers or commercial relationships. Routing evidence does not identify the ASN operator.
IPv4 prefixes
33
~327.9K addresses
IPv6 prefixes
0
—
Peer networks
2
0 up · 0 down
IANA block
1-1876
Assigned by ARIN
[ 01 ] — Context

About this ASN.

Updated  ·  Confidence: Low  ·  4 sources  ·  How this page is checked

AS1201 is an ASN with routing observed in the combined Route Views snapshot at 2026-11-03 14:00 UTC; the supplied evidence does not identify its operator or current organizational role. Across route-views2 and route-views6 together, the observation contains 33 IPv4 prefixes, an estimated 131,072 IPv4 addresses, and zero IPv6 prefixes. The zero is specific to this snapshot and does not establish that AS1201 is inactive or dormant.

The combined observation records two AS_PATH neighbours: AS22773 and AS40220. These are observed path adjacencies, not verified peering sessions, upstream providers, customers, or commercial relationships. The evidence does not establish which organization operates AS1201, where it is based, what services it provides, or whether the announced space is deployed for any particular product.

For identification work, compare the ASN and its announced prefixes against current registry records and operator-published network documentation. To investigate a specific address, first confirm that its prefix is among the observed announcements, then seek independent first-party evidence linking that prefix and AS1201 to an organization. Treat the two neighbours as routing clues only; this snapshot does not establish a relationship between them and an operator.

The IANA data identifies ARIN as the allocating RIR for the encompassing ASN block, not as a record of an individual assignment.

Routing status
33 IPv4 prefixes and zero IPv6 prefixes observed in the combined Route Views snapshot at 2026-11-03 14:00 UTC.
Triage
Operator identity, organizational role, location, and service use are Unknown from supplied evidence.
Observed neighbours
AS22773 and AS40220 appear as AS_PATH adjacencies; no commercial relationship is established.
Investigation
Check whether a target address belongs to an observed prefix, then seek first-party documentation linking that prefix and ASN to an operator.
RIR
ARIN, allocating RIR for the encompassing block [Confirmed] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
Operator
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
Country
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
Website
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv

Network & routing

Network type
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
AS rank
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
Customer cone size
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
IX presence
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
Peering policy
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
RPKI status
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
Observation scope
combined RouteViews snapshot at 2026-11-03T14:00:00.000Z; route-views2, route-views6 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
ASN
1201 [Confirmed] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
Organization status
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
IPv4 prefixes
33 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
IPv4 address estimate
131072 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
IPv6 prefixes
0 [Confirmed] — https://archive.routeviews.org/route-views6/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
AS_PATH neighbour count
2 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
AS_PATH neighbours sample
AS22773, AS40220 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
Allocation date
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
Last updated
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
Assignment class
Unknown [Unknown] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
[ 02 ] — Announced prefixes

What this network routes.

33 prefixes total · as observed by RouteViews at 2026-11-06 · one collector view, not a global census
// IPv4 prefixes33
  1. 128.82.0.0/16/16
  2. 157.21.0.0/16/16
  3. 128.82.128.0/17/17
  4. 157.21.0.0/17/17
  5. 157.21.128.0/17/17
  6. 128.82.64.0/18/18
  7. 157.21.0.0/18/18
  8. 157.21.128.0/18/18
  9. 157.21.192.0/18/18
  10. 157.21.64.0/18/18
  11. 128.82.0.0/21/21
  12. 128.82.40.0/21/21
  13. 128.82.48.0/21/21
  14. 128.82.56.0/21/21
  15. 128.82.8.0/22/22
  16. 128.82.12.0/23/23
  17. 128.82.14.0/23/23
  18. 128.82.16.0/23/23
  19. 128.82.18.0/23/23
  20. 128.82.28.0/23/23
  21. 128.82.30.0/23/23
  22. 128.82.32.0/23/23
  23. 128.82.34.0/23/23
  24. 128.82.36.0/23/23
  25. 128.82.38.0/23/23
  26. 128.82.52.0/23/23
  27. 128.82.101.0/24/24
  28. 128.82.20.0/24/24
  29. 128.82.21.0/24/24
  30. 128.82.54.0/24/24
  31. 128.82.60.0/24/24
  32. 128.82.61.0/24/24
  33. 128.82.75.0/24/24
// IPv6 prefixes0
No IPv6 prefixes announced.
[ 03 ] — Notable peers & upstreams

Who it talks to.

2 observed neighbours
// Notable connections2 of 2 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
AS22773 Cox Communications Inc. —
AS40220 — —
Neighbours observed via public BGP collectors; not a complete peering list.