206208 looking glass

AS637 United States Department of Defense (DoD) 🇺🇸 US

Announcing 535 prefixes, seen at the RIS collectors.

IPv4 prefixes
535
1,038,336 (4,056 × /24)
IPv6 prefixes
0
-
Upstreams
3
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it

Registry and operator data

AS number
AS637
Name
United States Department of Defense (DoD)
Organisation
United States Department of Defense (DoD)
Country
🇺🇸 US
RIR
ARIN
Allocated
1990-04-19

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

0 valid (0.0%) 0 invalid (0.0%) 535 no ROA (100.0%)

Announcement history

One point per day, recorded at each table import

013426840153509-1809-2309-2810-0310-0810-1310-1810-20
IPv4 IPv6

Recorded changes

New prefixes and origin changes seen on the live stream

WhenChangePrefixOriginPath
2026-10-20 13:46:12Z new prefix 137.235.138.0/23 AS637 United States Department of Defense (DoD) 612186939335672172127064637
2026-10-17 23:24:38Z new prefix 137.234.176.0/24 AS637 United States Department of Defense (DoD) 176396939335672172172172172172172127066637
2026-10-13 05:29:38Z origin change 158.244.192.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:29:38Z origin change 158.244.208.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:29:38Z origin change 158.244.216.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:29:38Z origin change 158.244.224.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:29:38Z origin change 158.244.232.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:29:38Z origin change 158.244.240.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:29:38Z origin change 158.244.248.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:29:38Z origin change 158.244.200.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:29:27Z origin change 158.244.192.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:29:27Z origin change 158.244.224.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:29:27Z origin change 158.244.248.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:29:27Z origin change 158.244.232.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:29:27Z origin change 158.244.240.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:29:27Z origin change 158.244.216.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:29:27Z origin change 158.244.208.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:29:27Z origin change 158.244.200.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:29:13Z origin change 158.244.216.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:29:13Z origin change 158.244.200.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:29:13Z origin change 158.244.208.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:29:13Z origin change 158.244.248.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:29:13Z origin change 158.244.240.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:29:13Z origin change 158.244.192.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:29:13Z origin change 158.244.232.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:29:13Z origin change 158.244.224.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:28:42Z origin change 158.244.216.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:28:42Z origin change 158.244.200.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:28:42Z origin change 158.244.208.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:28:42Z origin change 158.244.248.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:28:42Z origin change 158.244.240.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:28:42Z origin change 158.244.192.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:28:42Z origin change 158.244.232.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:28:42Z origin change 158.244.224.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:26:35Z origin change 158.244.192.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:26:35Z origin change 158.244.208.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:26:35Z origin change 158.244.216.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:26:35Z origin change 158.244.224.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:26:35Z origin change 158.244.232.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:26:35Z origin change 158.244.240.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:26:35Z origin change 158.244.248.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:26:35Z origin change 158.244.200.0/21 AS637 → AS5852 5572029143356721721270645852
2026-10-13 05:26:29Z origin change 158.244.232.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:26:29Z origin change 158.244.248.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:26:29Z origin change 158.244.208.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:26:29Z origin change 158.244.224.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:26:29Z origin change 158.244.192.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:26:29Z origin change 158.244.240.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:26:29Z origin change 158.244.216.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:26:29Z origin change 158.244.200.0/21 AS5852 → AS637 3549335672172127064637
2026-10-13 05:26:09Z origin change 158.244.216.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:26:09Z origin change 158.244.200.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:26:09Z origin change 158.244.208.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:26:09Z origin change 158.244.248.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:26:09Z origin change 158.244.240.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:26:09Z origin change 158.244.192.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:26:09Z origin change 158.244.232.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:26:09Z origin change 158.244.224.0/21 AS637 → AS5852 138309713356721721270645852
2026-10-13 05:25:40Z origin change 158.244.216.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:25:40Z origin change 158.244.200.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:25:40Z origin change 158.244.208.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:25:40Z origin change 158.244.248.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:25:40Z origin change 158.244.240.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:25:40Z origin change 158.244.192.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:25:40Z origin change 158.244.232.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-13 05:25:40Z origin change 158.244.224.0/21 AS5852 → AS637 13830971335672172127064637
2026-10-08 11:54:03Z new prefix 214.45.241.0/24 AS637 United States Department of Defense (DoD) 44393580576939335672172172172172172172127065637