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Data as of Nov 15, 2026

137.155.40.0/21

Anonymizer · ISP proxy

Cox Communications Inc. · space held by Christopher Newport University

Announcement
this exact prefix
RPKI valid
Announced by
AS22773
Type
ISP proxy
Risk
90 / 100 · Critical
Recently moved
Recent change
New origin Nov 8, 2026
from AS6079 RCN
IPv4 market

Path

Announced by AS22773 since Nov 8, 2026 · 7 days ago
1 · Holder
Christopher Newport University
record created Dec 12, 1989
2 · Leased from
Rackdog
for its owner Christopher Newport University
3 · Announced by
AS22773 Cox Communications Inc.
since Nov 8, 2026 · 7 days ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 137.155.40.0/21/24s
Rackdog
2,048100%
8
Leased from

Owners leasing their own space

NameIn 137.155.40.0/21/24s
Christopher Newport University
2,048100%
8

Lineage

How this block came to its use, oldest first. The whole IPv4 market →

137.155.40.0/21

From the registry to its use

  1. Dec 12, 1989
    Registry record
    Christopher Newport University
    Direct Allocation (legacy, pre-1997)
    137.155.0.0/16
  2. Aug 22, 2017– Dec 3, 2020
    Announced
    AS1411 Christopher Newport University
    Education
  3. Sep 3, 2026
    Route object
    AS6079 RCN
    ARIN route object for AS6079 RCN, maintainer MNT-CNU-1-Z
  4. Sep 3, 2026
    Route object
    AS7843 Charter Communications Inc
    ARIN route object for AS7843 Charter Communications Inc, maintainer MNT-CNU-1-Z
  5. Sep 3, 2026
    Route object
    AS22773 Cox Communications Inc.
    ARIN route object for AS22773 Cox Communications Inc., maintainer MNT-CNU-1-Z
  6. Sep 16, 2026– Nov 2, 2026
    Announced
    AS6079 RCN
    Internet provider
  7. Nov 8, 2026– today
    Announced
    AS22773 Cox Communications Inc.
    Internet provider
  8. today
    Leased from
    Rackdog
    IP broker

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Routing timeline

Who has announced this prefix

Summary

Routing history

Pattern
Rotating
First seen
Aug 2017
Current origin since
Nov 8, 2026 · under a month
Origin networks
3
Last change of origin
Nov 8, 2026
Recorded history

History

Handoffs
2