Autonomous system detail

AS1103

Announced

AS1103 announces 100 IPv4 and 4 IPv6 prefixes and peers with 41 other networks.

Summary

// analyst note
Routing observations are the combined snapshot from route-views2 and route-views6 at 2026-11-03 14:00 UTC; observed AS_PATH neighbours are not verified commercial peers or upstreams.
IPv4 prefixes
100
~7.2M addresses
IPv6 prefixes
4
announced
Peer networks
41
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

AS1103 is assigned through ARIN and had active route visibility in the combined Route Views snapshot at 2026-11-03 14:00 UTC. That snapshot, collected by route-views2 and route-views6 together, contained 100 IPv4 prefixes and 4 IPv6 prefixes for the ASN. The supplied evidence does not identify its operator, country, website, or network type.

The snapshot also recorded an estimate of 7,204,096 IPv4 addresses and 42 observed AS_PATH neighbours. These measurements describe this combined observation at that timestamp; they do not establish commercial peering, upstream or customer relationships, or current conditions beyond the snapshot.

For identification, compare the ASN and announced prefixes with independently documented operator records, then check whether the same routes appear in later observations. Treat the listed neighbours as routing-path clues only. The registry block indicates ARIN assignment authority for this range, but does not establish an individual assignment, deployment, traffic prevalence, or safety.

Identity
Operator and country are Unknown from the supplied evidence.
Routing snapshot
100 IPv4 prefixes and 4 IPv6 prefixes observed at 2026-11-03 14:00 UTC, combined across route-views2 and route-views6.
Triage
Routes were visible in this snapshot; no security or reputation evidence is supplied.
AS name
Unknown [Unknown] — 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
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
1103 [Confirmed] — https://www.iana.org/assignments/as-numbers/as-numbers-1.csv
Allocating RIR
ARIN [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 observed
100 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
IPv4 address estimate
7204096 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
IPv6 prefixes observed
4 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
Observed AS_PATH neighbours
42 [Confirmed] — https://archive.routeviews.org/route-views2/bgpdata/2026.11/RIBS/rib.20261103.1400.bz2
[ 02 ] — Announced prefixes

What this network routes.

104 prefixes total · as observed by RouteViews at 2026-11-06 · one collector view, not a global census
// IPv4 prefixes100
  1. 145.144.0.0/12/12
  2. 145.160.0.0/12/12
  3. 145.120.0.0/14/14
  4. 145.140.0.0/14/14
  5. 145.100.0.0/15/15
  6. 145.124.0.0/15/15
  7. 145.136.0.0/15/15
  8. 145.2.0.0/15/15
  9. 145.28.0.0/15/15
  10. 145.38.0.0/15/15
  11. 145.48.0.0/15/15
  12. 145.74.0.0/15/15
  13. 145.88.0.0/15/15
  14. 145.92.0.0/15/15
  15. 129.125.0.0/16/16
  16. 130.37.0.0/16/16
  17. 131.174.0.0/16/16
  18. 131.211.0.0/16/16
  19. 131.224.0.0/16/16
  20. 132.229.0.0/16/16
  21. 134.221.0.0/16/16
  22. 136.231.0.0/16/16
  23. 137.120.0.0/16/16
  24. 137.224.0.0/16/16
  25. 137.56.0.0/16/16
  26. 139.63.0.0/16/16
  27. 141.252.0.0/16/16
  28. 143.121.0.0/16/16
  29. 145.0.0.0/16/16
  30. 145.102.0.0/16/16
  31. 145.103.0.0/16/16
  32. 145.107.0.0/16/16
  33. 145.108.0.0/16/16
  34. 145.117.0.0/16/16
  35. 145.118.0.0/16/16
  36. 145.126.0.0/16/16
  37. 145.138.0.0/16/16
  38. 145.19.0.0/16/16
  39. 145.20.0.0/16/16
  40. 145.23.0.0/16/16
  41. 145.24.0.0/16/16
  42. 145.33.0.0/16/16
  43. 145.37.0.0/16/16
  44. 145.41.0.0/16/16
  45. 145.44.0.0/16/16
  46. 145.5.0.0/16/16
  47. 145.51.0.0/16/16
  48. 145.52.0.0/16/16
  49. 145.76.0.0/16/16
  50. 145.81.0.0/16/16
  51. 145.85.0.0/16/16
  52. 145.9.0.0/16/16
  53. 145.90.0.0/16/16
  54. 145.91.0.0/16/16
  55. 145.95.0.0/16/16
  56. 145.96.0.0/16/16
  57. 145.98.0.0/16/16
  58. 156.83.0.0/16/16
  59. 192.87.0.0/16/16
  60. 194.171.0.0/16/16
  61. 195.169.0.0/16/16
  62. 145.1.0.0/17/17
  63. 145.127.0.0/17/17
  64. 145.116.128.0/18/18
  65. 145.116.64.0/18/18
  66. 145.137.128.0/18/18
  67. 145.97.128.0/18/18
  68. 145.97.192.0/18/18
  69. 145.97.64.0/18/18
  70. 145.116.224.0/19/19
  71. 145.116.192.0/20/20
  72. 145.97.0.0/20/20
  73. 145.97.48.0/20/20
  74. 194.104.240.0/20/20
  75. 194.13.16.0/20/20
  76. 145.97.24.0/21/21
  77. 194.13.112.0/21/21
  78. 145.107.24.0/22/22
  79. 145.97.16.0/22/22
  80. 145.97.20.0/22/22
  81. 192.42.120.0/22/22
  82. 192.42.124.0/22/22
  83. 193.177.176.0/22/22
  84. 194.26.12.0/22/22
  85. 194.26.8.0/22/22
  86. 192.16.188.0/23/23
  87. 192.42.114.0/23/23
  88. 194.104.124.0/23/23
  89. 145.98.16.0/24/24
  90. 192.104.140.0/24/24
  91. 192.31.231.0/24/24
  92. 192.33.36.0/24/24
  93. 192.42.113.0/24/24
  94. 192.43.212.0/24/24
  95. 193.176.235.0/24/24
  96. 194.53.88.0/24/24
  97. 194.53.89.0/24/24
  98. 194.53.92.0/24/24
  99. 194.53.94.0/24/24
  100. 194.53.95.0/24/24
// IPv6 prefixes4
  1. 2001:610::/29/29
  2. 2001:678:1334::/48/48
  3. 2001:67c:1200::/48/48
  4. 2001:67c:262c::/48/48
[ 03 ] — Notable peers & upstreams

Who it talks to.

41 observed neighbours
// Notable connections32 of 41 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
AS112 The AS112 Project (resources stewarded by DNS-OARC; nodes run by many volunteers) —
AS288 European Space Agency (ESA) —
AS293 Energy Sciences Network (ESnet) —
AS1101 — —
AS1102 — —
AS1104 Nikhef —
AS1124 — —
AS1128 — —
AS1133 — —
AS1140 — —
AS1145 — —
AS1147 — —
AS1152 — —
AS1161 — —
AS1199 — —
AS1200 — —
AS1837 — —
AS1888 — —
AS2914 NTT America, Inc. —
AS3257 GTT Communications, Inc. —
AS3303 — —
AS3333 — —
AS6830 Liberty Global Europe Holding B.V. —
AS6939 Hurricane Electric LLC —
AS11537 — —
AS12552 — —
AS12637 — —
AS12654 — —
AS20562 — —
AS20965 — —
AS25152 — —
AS25182 — —
Neighbours observed via public BGP collectors; not a complete peering list.