Network · data from 2026-11-12

AS36671 TWO SIGMA INVESTMENTS, LP

Registry name: TWOSIGMA2 - TWO SIGMA INVESTMENTS, LP, US · PeeringDB

14IPv4 routes 42.9% RPKI valid · 78.6% with a route object

2IPv6 routes 100.0% RPKI valid · 50.0% with a route object

0RPKI invalid 0 origin · 0 maxLength

8No ROA 4 with no route object for this origin

0Low visibility seen by under 10% of full-table peers

4Route objects not announced registered with origin AS36671, seen from no peer

Announced routes

Every prefix a peer of the route collectors sees with origin AS36671, things to look at first. Visibility = full-table peers that see it, of 673 (IPv4) and 636 (IPv6) on 75 collectors. Also as routes.csv.


38.97.45.0/24	No ROA	Other IRR onlyRADB	672 100%	67
38.108.14.0/24	No ROA	Other IRR onlyRADB	672 100%	67
38.117.134.0/24	No ROA	Other IRR onlyRADB	672 100%	67
38.27.161.0/24	No ROA	Other IRR onlyRADB	670 100%	67
8.2.105.0/24	No ROA	RIR databaseARIN	673 100%	67
8.245.33.0/24	No ROA	RIR databaseARIN, RADB	673 100%	67
46.183.200.0/24	No ROA	RIR databaseRIPE	673 100%	67
46.183.201.0/24	No ROA	RIR databaseRIPE	672 100%	67
208.77.212.0/24	Valid	Nonecovered by 208.77.212.0/22	673 100%	67
208.77.213.0/24	Valid	Nonecovered by 208.77.212.0/22	673 100%	67
208.77.214.0/24	Valid	Nonecovered by 208.77.212.0/22	673 100%	67
2620:106:3003::/48	Valid	Nonecovered by 2620:106:3000::/40	605 95%	67
207.226.133.0/24	Valid	RIR databaseAPNIC	673 100%	67
208.77.212.0/22	Valid	RIR databaseARIN	673 100%	67
212.133.79.0/24	Valid	RIR databaseRIPE	673 100%	67
2620:106:3000::/40	Valid	RIR databaseARIN	635 100%	67

AS-SET

AS36671's PeeringDB record names no AS-SET.

Fix list

The changes that would bring RPKI, the IRR and what's announced into line. Some are deliberate (a route object kept for a backup route, say); the network decides. All 20 are in fix.csv.

ROA: none8
Route object: none4
Route object: RIR4
Route object: not announced4

Change	Prefix or set	Detail	Full-table peers
ROA: none	38.97.45.0/24	No ROA covers it. Add a ROA for AS36671, maxLength 24.	672 of 673
Route object: RIR	38.97.45.0/24	Route object only in RADB. Add it in the RIR database for the space.	672 of 673
ROA: none	38.108.14.0/24	No ROA covers it. Add a ROA for AS36671, maxLength 24.	672 of 673
Route object: RIR	38.108.14.0/24	Route object only in RADB. Add it in the RIR database for the space.	672 of 673
ROA: none	38.117.134.0/24	No ROA covers it. Add a ROA for AS36671, maxLength 24.	672 of 673
Route object: RIR	38.117.134.0/24	Route object only in RADB. Add it in the RIR database for the space.	672 of 673
ROA: none	38.27.161.0/24	No ROA covers it. Add a ROA for AS36671, maxLength 24.	670 of 673
Route object: RIR	38.27.161.0/24	Route object only in RADB. Add it in the RIR database for the space.	670 of 673
ROA: none	8.2.105.0/24	No ROA covers it. Add a ROA for AS36671, maxLength 24.	673 of 673
ROA: none	8.245.33.0/24	No ROA covers it. Add a ROA for AS36671, maxLength 24.	673 of 673
ROA: none	46.183.200.0/24	No ROA covers it. Add a ROA for AS36671, maxLength 24.	673 of 673
ROA: none	46.183.201.0/24	No ROA covers it. Add a ROA for AS36671, maxLength 24.	672 of 673
Route object: none	208.77.212.0/24	No route object for it. A route object for 208.77.212.0/22 with origin AS36671 covers it (filters allowing more-specifics accept it). Add a route object with origin AS36671 in the RIR database for the space.	673 of 673
Route object: none	208.77.213.0/24	No route object for it. A route object for 208.77.212.0/22 with origin AS36671 covers it (filters allowing more-specifics accept it). Add a route object with origin AS36671 in the RIR database for the space.	673 of 673
Route object: none	208.77.214.0/24	No route object for it. A route object for 208.77.212.0/22 with origin AS36671 covers it (filters allowing more-specifics accept it). Add a route object with origin AS36671 in the RIR database for the space.	673 of 673
Route object: none	2620:106:3003::/48	No route object for it. A route object for 2620:106:3000::/40 with origin AS36671 covers it (filters allowing more-specifics accept it). Add a route object with origin AS36671 in the RIR database for the space.	605 of 636

Change

Prefix or set

Detail

Full-table peers

ROA: none

38.97.45.0/24

No ROA covers it. Add a ROA for AS36671, maxLength 24.

672 of 673

Route object: RIR

38.97.45.0/24

Route object only in RADB. Add it in the RIR database for the space.

672 of 673

ROA: none

38.108.14.0/24

No ROA covers it. Add a ROA for AS36671, maxLength 24.

672 of 673

Route object: RIR

38.108.14.0/24

Route object only in RADB. Add it in the RIR database for the space.

672 of 673

ROA: none

38.117.134.0/24

No ROA covers it. Add a ROA for AS36671, maxLength 24.

672 of 673

Route object: RIR

38.117.134.0/24

Route object only in RADB. Add it in the RIR database for the space.

672 of 673

ROA: none

38.27.161.0/24

No ROA covers it. Add a ROA for AS36671, maxLength 24.

670 of 673

Route object: RIR

38.27.161.0/24

Route object only in RADB. Add it in the RIR database for the space.

670 of 673

ROA: none

8.2.105.0/24

No ROA covers it. Add a ROA for AS36671, maxLength 24.

673 of 673

ROA: none

8.245.33.0/24

No ROA covers it. Add a ROA for AS36671, maxLength 24.

673 of 673

ROA: none

46.183.200.0/24

No ROA covers it. Add a ROA for AS36671, maxLength 24.

673 of 673

ROA: none

46.183.201.0/24

No ROA covers it. Add a ROA for AS36671, maxLength 24.

672 of 673

Route object: none

208.77.212.0/24

No route object for it. A route object for 208.77.212.0/22 with origin AS36671 covers it (filters allowing more-specifics accept it). Add a route object with origin AS36671 in the RIR database for the space.

673 of 673

Route object: none

208.77.213.0/24

673 of 673

Route object: none

208.77.214.0/24

673 of 673

Route object: none

2620:106:3003::/48

No route object for it. A route object for 2620:106:3000::/40 with origin AS36671 covers it (filters allowing more-specifics accept it). Add a route object with origin AS36671 in the RIR database for the space.

605 of 636

Route objects not announced

Route objects with origin AS36671 whose prefix no peer sees AS36671 announce. Many are kept on purpose (backup routes, space announced only in some places).


74.121.208.0/21	ARIN	Valid
77.77.172.0/24	RADB	Valid
154.210.0.0/24	AFRINIC	Invalid: origin
216.180.32.0/19	ARIN	Valid

74.121.208.0/21

ARIN

Valid

77.77.172.0/24

RADB

Valid

154.210.0.0/24

AFRINIC

Invalid: origin

216.180.32.0/19

ARIN

Valid

Routes: the 08:00 UTC snapshots of 2026-11-12 from 75 RIPE RIS and RouteViews collectors. RPKI: our rpki-client run before the snapshot. IRR: the day's dumps of the five RIR databases and RADB's mirrors. The LEVEL3 and IDNIC databases publish no dump and aren't read, so route objects only there count as none.