Network report

Who holds an IP address, prefix or AS number, how it is routed (origin AS, RPKI, IRR), its reverse DNS, blocklist listings and PeeringDB record, with what to fix first.

AS7738 · 0 seconds ago

curl -s "https://thenetworkery.com/api/v1/network-report?query=AS7738"

JSON Docs

Warning: AS7738 (AS7738) announces 236 IPv4 and 2 IPv6 prefixes. 2 warnings

AS page	AS7738
Holder	AS7738 - V tal
Allocation	LACNIC, Brazil (BR), allocated 1999-11-16
Prefixes (IPv4 / IPv6)	236 / 2
RPKI valid	0% (0 / 238)
Upstreams and peers	11
Peering policy	Open

What to fix

Warning

10 of 238 announced prefixes have no ROA (RPKI not found): 138.0.16.0/22, 152.234.184.0/21, 152.237.216.0/21, 152.239.0.0/18, 152.239.64.0/20 (+5).

Without a ROA, networks cannot tell your routes from a hijack.

Fix: Create a ROA for each at your RIR portal, with origin AS7738 and a max length equal to the prefix length:

138.0.16.0/22 AS7738 max-length /22
152.234.184.0/21 AS7738 max-length /21
152.237.216.0/21 AS7738 max-length /21
152.239.0.0/18 AS7738 max-length /18
152.239.64.0/20 AS7738 max-length /20
152.239.80.0/20 AS7738 max-length /20
152.239.96.0/20 AS7738 max-length /20
177.177.56.0/21 AS7738 max-length /21
177.177.96.0/21 AS7738 max-length /21
177.177.200.0/21 AS7738 max-length /21

Open in RPKI / ROA validator Guide

Warning

No public NOC, policy or technical contact.

Other networks use these addresses to set up peering and to reach you during an incident.

Fix: Add a role contact (for example noc@ or peering@ an address you monitor) with visibility Public.

Open in PeeringDB lookup

Checks

Routing and RPKI 10 of 238 announced prefixes have no ROA (RPKI not found): 138.0.16.0/22, 152.234.184.0/21, 152.237.216.0/21, 152.239.0.0/18, 152.239.64.0/20 (+5).

Pass: AS7738 announces 236 IPv4 and 2 IPv6 prefixes.
Warning: 10 of 238 announced prefixes have no ROA (RPKI not found): 138.0.16.0/22, 152.234.184.0/21, 152.237.216.0/21, 152.239.0.0/18, 152.239.64.0/20 (+5).
Info: The RPKI state of 228 prefixes was not looked up (no ROA of AS7738 covers them; only the first 10 are checked).
Pass: Every announced prefix has an IRR route object.
Info: 11 upstreams and peers, 149 downstream networks seen.

Holder	AS7738 - V tal
IPv4 prefixes	236
IPv6 prefixes	2
RPKI	10 not found · 228 not looked up
Downstream networks	149

Routes to fix

Prefix	RPKI
138.0.16.0/22	No ROA
152.234.184.0/21	No ROA
152.237.216.0/21	No ROA
152.239.0.0/18	No ROA
152.239.64.0/20	No ROA
152.239.80.0/20	No ROA
152.239.96.0/20	No ROA
177.177.56.0/21	No ROA
177.177.96.0/21	No ROA
177.177.200.0/21	No ROA

Upstreams and peers seen to the left 11

AS52320 Vtal 52320 AS8167 Vtal 8167 AS3356 Lumen AS3356 AS22356 Durand do Brasil AS4230 Claro AS262999 IVI AS10429 TELEFÔNICA BRASIL AS10429 AS1031 PEER-1 AS16735 Algar AS61568 FSF Tecnologia AS15830 Equinix as15830

Announced prefixes 238

138.0.16.0/22 152.234.184.0/21 152.237.216.0/21 152.239.0.0/18 152.239.64.0/20 152.239.80.0/20 152.239.96.0/20 177.177.56.0/21 177.177.96.0/21 177.177.200.0/21 179.66.160.0/21 179.67.240.0/21 179.197.104.0/21 179.197.152.0/21 179.197.160.0/20 179.197.176.0/20 179.197.192.0/20 179.197.208.0/21 179.198.72.0/21 179.198.128.0/18 179.198.232.0/21 179.199.176.0/21 179.236.56.0/21 179.236.112.0/20 179.236.200.0/21 179.236.208.0/21 186.240.128.0/21 186.240.160.0/21 186.241.8.0/21 186.241.136.0/21 186.242.152.0/21 186.242.200.0/21 186.244.16.0/21 186.244.96.0/20 186.244.120.0/21 186.244.136.0/21 186.247.16.0/21 186.247.80.0/21 186.247.104.0/21 186.247.128.0/21 186.247.192.0/21 186.247.232.0/21 186.247.240.0/21 187.12.0.0/16 187.12.0.0/18 187.12.64.0/18 187.12.128.0/18 187.12.192.0/18 187.13.48.0/20 187.13.144.0/21 187.13.168.0/21 187.13.232.0/21 187.14.32.0/21 187.14.72.0/21 187.14.192.0/21 187.14.216.0/21 187.15.64.0/21 187.15.184.0/21 187.40.0.0/21 187.40.64.0/21 187.40.192.0/21 187.40.208.0/20 187.41.64.0/21 187.76.0.0/16 187.76.0.0/18 187.76.64.0/18 187.76.128.0/18 187.76.192.0/18 187.78.160.0/20 187.79.144.0/21 187.125.0.0/16 187.125.0.0/18 187.125.64.0/18 187.125.128.0/18 187.125.192.0/18 187.126.56.0/21 187.126.88.0/21 187.126.104.0/21 189.12.32.0/20 189.12.64.0/21 189.24.56.0/21 189.49.64.0/21 189.80.0.0/16 189.80.0.0/18 189.80.64.0/18 189.80.128.0/18 189.80.192.0/18 189.105.0.0/20 191.0.64.0/20 191.40.80.0/21 191.40.104.0/21 191.44.8.0/21 191.45.48.0/21 200.97.0.0/20 200.97.16.0/21 200.97.48.0/21 200.97.64.0/18 200.97.128.0/21 200.97.144.0/20 200.141.32.0/20

Showing the first 100.

Source: RIPEstat (RIPE NCC RIS, Routinator, IRR); AS names: Team Cymru

Open in ASN & BGP prefix lookup

Registration Found at rdap.arin.net.

Pass: Found at rdap.arin.net.

Name	ASN7738
Handle	7738
Range	AS7738
Country	BR
Registered	1999-11-16T12:00:00Z
Last changed	2025-07-31T14:34:09Z
Abuse contact	abuse@vtal.com

Allocation

Registry (RIR)	LACNIC
Country	Brazil (BR)
Delegated on	1999-11-16
Status	Allocated
Delegated range	AS7738

Source: RIR delegation data, updated daily. The country is where the range was registered, not necessarily where it is used.

Contacts

Role	Name	Email
registrant	V tal
administrative	Centro de Gerencia de Rede TELEMAR	ld-numeracaoip@vtal.com
abuse	Segurança da Informação Vtal	abuse@vtal.com

Source: https://rdap.arin.net/registry/autnum/7738. Registration data from rdap.arin.net, shown under its terms of use (terms): not for marketing or bulk collection.

Open in WHOIS / RDAP lookup

PeeringDB No public NOC, policy or technical contact.

Pass: AS7738 is in PeeringDB as Vtal 7738.
Info: Peering policy: Open.
Info: No internet exchange ports are listed.
Warning: No public NOC, policy or technical contact.

Network	Vtal 7738 (Telemar/Pegasus/Oi/Vtal)
AS number	AS7738
Type	NSP, Global
Website	http://www.vtal.com
IRR as-set	RADB::AS-OINETBR
Prefixes (IPv4 / IPv6)	30000 / 10000
Traffic	Mostly Inbound
Peering policy	Open
Locations	Required - US
Ratio required	No
Contracts	Not Required
Last updated	2026-11-02

Source: PeeringDB. Results are cached for an hour.

Open in PeeringDB lookup