IP.CC
搜索
IP地址详细信息
AS61689
FLAVIO GARCIA FERREIRA ·www.allrede.com.br
IP地址详细信息
AS61689
FLAVIO GARCIA FERREIRA ·www.allrede.com.br
  • 摘要 IP.CC
  • 前缀
  • 同行
  • 上游
  • 下游
  • 世界地图
  • WHOIS详细信息
  • IX

摘要

  • ASN编号
    AS61689
  • 组织名称
    FLAVIO GARCIA FERREIRA
  • 国家
    Brazil
  • 国家编码
    BR
  • 站点
  • 区域登记
    Lacnic
  • 分配日期
    8th September 2014
  • 分配状态
    Allocated
  • Ipv4前缀
    19
  • Ipv6前缀
    15
  • Ipv4同行
    32
  • Ipv6同行
    18
  • Ipv4上游
    1
  • Ipv6上游
    1

前缀

此 ASN 有 19 个 IPv4 前缀。

国家
公布的前缀
描述
父前缀
RIR
countries.131.108.124.0/23
131.108.124.0/22Lacnic
countries.131.108.124.0/24
131.108.124.0/22Lacnic
Brazil131.108.125.0/24
INFORTEK NETWORKS LTDA -ME
131.108.124.0/22Lacnic
countries.131.108.126.0/23
131.108.124.0/22Lacnic
Brazil131.108.126.0/24
INFORTEK NETWORKS LTDA -ME
131.108.124.0/22Lacnic
Brazil131.108.127.0/24
INFORTEK NETWORKS LTDA -ME
131.108.124.0/22Lacnic
Brazil177.84.236.0/23
INFORTEK NETWORKS LTDA -ME
177.84.236.0/22Lacnic
Brazil177.84.236.0/24
INFORTEK NETWORKS LTDA -ME
177.84.236.0/22Lacnic
Brazil177.84.237.0/24
INFORTEK NETWORKS LTDA -ME
177.84.236.0/22Lacnic
countries.177.84.238.0/23
177.84.236.0/22Lacnic
countries.177.84.238.0/24
177.84.236.0/22Lacnic
Brazil177.84.239.0/24
INFORTEK NETWORKS LTDA -ME
177.84.236.0/22Lacnic
Brazil200.34.216.0/23
INFORTEK NETWORKS LTDA -ME
200.34.216.0/22Lacnic
countries.200.34.216.0/24
200.34.216.0/22Lacnic
countries.200.34.217.0/24
200.34.216.0/22Lacnic
Brazil200.34.218.0/23
INFORTEK NETWORKS LTDA -ME
200.34.216.0/22Lacnic
Brazil200.34.218.0/24
INFORTEK NETWORKS LTDA -ME
200.34.216.0/22Lacnic
Brazil200.34.219.0/24
INFORTEK NETWORKS LTDA -ME
200.34.216.0/22Lacnic
countries.45.238.48.0/22
--IANA
  • 1
IP范围API
使用IP信息强大的IP范围 API获取这些数据和更多信息-快速轻松地识别公司拥有的IP范围。
有用的 游戏技术, 和 广告技术
IP范围API
使用IP信息强大的IP范围 API获取这些数据和更多信息-快速轻松地识别公司拥有的IP范围。
有用的 游戏技术, 和 广告技术

同行

此 ASN 有 32 个 IPv4 对等点。

国家
ASN
描述
IPv6
BrazilAS262324
ALLREDE TELECOM LTDA
true
BrazilAS262663
METROFLEX TELECOMUNICACOES LTDA
false
AS262827
OPERADORA BRASILEIRA DE TELECOMUNICACAO E INTERNET
true
BrazilAS262869
G1Telecom Provedor de Internet LTDA ME
false
BrazilAS263344
wr net informi¿½tica e telecomunicai¿½i¿½es ltda
false
BrazilAS263374
YZO TELECOM TECNOLOGIA EIRELI - ME
false
BrazilAS264368
A. L. A. INFORMATICA LTDA.
false
BrazilAS264386
MMM E G TELECOMUNICACOES LTDA - ME
false
BrazilAS264443
Policanal Servii¿½os de Telecomunicai¿½i¿½es Ltda.
false
BrazilAS265275
L.C.DE CARVALHO CARNEIRO-ME
false
AS266054
SKILL.NET TELECOMUNICACOES LTDA
true
AS266314
ALLREDE TELECOM (STATUS EQUIPAMENTOS VIA RADIO)
true
BrazilAS266399
NUDOZE TELECOMUNICACOES EIRELI
false
AS267249
LOGTEL INTERNET E COMUNICACOES LTDA
true
BrazilAS267351
JOSUEL FRANCISCO DE OLIVEIRA - ME
false
AS267411
LEONARDO RODRIGO FERRO - ME
false
BrazilAS267568
R. C. F. i¿½ TELECOM LTDA i¿½ ME
true
AS267672
C P NET - PROVEDOR DE INTERNET BANDA LARGA LTDA
true
BrazilAS268176
LINK TELECOM EIRELI
false
BrazilAS268308
VIVA CONNECTION TELECOMUNICAi¿½i¿½ES LTDA ME
false
  • 1
  • 2
ASN 数据
每个IP地址和每个ASN相关域的ASN详细信息、分配日期、注册表名称、IP地址总数和分配的前缀。
有用的 网络安全
ASN 数据
每个IP地址和每个ASN相关域的ASN详细信息、分配日期、注册表名称、IP地址总数和分配的前缀。
有用的 网络安全

上游

此 ASN 有 1 个 IPv4 上游。

国家
ASN
描述
IPv6
BrazilAS273683
ALLREDE TELECOM LTDA
true
  • 1
ASN 数据
每个IP地址和每个ASN相关域的ASN详细信息、分配日期、注册表名称、IP地址总数和分配的前缀。
有用的 网络安全
ASN 数据
每个IP地址和每个ASN相关域的ASN详细信息、分配日期、注册表名称、IP地址总数和分配的前缀。
有用的 网络安全

下游

此 ASN 有 1 个 IPv4 下游。

国家
ASN
描述
IPv6
AS266314
ALLREDE TELECOM (STATUS EQUIPAMENTOS VIA RADIO)
true
  • 1
ASN 数据
每个IP地址和每个ASN相关域的ASN详细信息、分配日期、注册表名称、IP地址总数和分配的前缀。
有用的 网络安全
ASN 数据
每个IP地址和每个ASN相关域的ASN详细信息、分配日期、注册表名称、IP地址总数和分配的前缀。
有用的 网络安全

AS61689 Combined Upstream Graph AS61689 AS61689 AS273683 AS273683 AS61689->AS273683 AS3356 AS3356 AS273683->AS3356 AS16735 AS16735 AS273683->AS16735 AS1239 AS1239 AS3356->AS1239 AS3257 AS3257 AS3356->AS3257 AS7018 AS7018 AS3356->AS7018 AS3549 AS3549 AS3356->AS3549 AS1299 AS1299 AS3356->AS1299 AS2914 AS2914 AS3356->AS2914 AS2497 AS2497 AS3356->AS2497 AS209 AS209 AS3356->AS209 AS6453 AS6453 AS3356->AS6453 AS6461 AS6461 AS3356->AS6461 AS174 AS174 AS3356->AS174 AS701 AS701 AS3356->AS701 AS16735->AS174 AS6762 AS6762 AS16735->AS6762
AS61689 Combined Upstream Graph AS61689 AS61689 AS273683 AS273683 AS61689->AS273683 AS3356 AS3356 AS273683->AS3356 AS16735 AS16735 AS273683->AS16735 AS1239 AS1239 AS3356->AS1239 AS3257 AS3257 AS3356->AS3257 AS7018 AS7018 AS3356->AS7018 AS3549 AS3549 AS3356->AS3549 AS1299 AS1299 AS3356->AS1299 AS2914 AS2914 AS3356->AS2914 AS2497 AS2497 AS3356->AS2497 AS209 AS209 AS3356->AS209 AS6453 AS6453 AS3356->AS6453 AS6461 AS6461 AS3356->AS6461 AS174 AS174 AS3356->AS174 AS701 AS701 AS3356->AS701 AS16735->AS174 AS6762 AS6762 AS16735->AS6762

世界地图

WHOIS详细信息

% IP Client: 2a10:b641:57:2972:ce36:c665:636d:dad8

% Copyright (c) Nic.br
% The use of the data below is only permitted as described in
% full by the Use and Privacy Policy at https://registro.br/upp ,
% being prohibited its distribution, commercialization or
% reproduction, in particular, to use it for advertising or
% any similar purpose.
% 2024-12-07T03:18:30-03:00 - IP: 2a10:b641:57:2972:ce36:c665:636d:dad8

aut-num: AS61689
owner: FLAVIO GARCIA FERREIRA
ownerid: 11.840.992/0001-81
responsible: FLAVIO GARCIA FERREIRA
country: BR
owner-c: FMABR7
routing-c: ALTEL100
abuse-c: ALTLT97
created: 20140908
changed: 20240105
inetnum: 131.108.124.0/22
inetnum: 2804:1d04::/32
inetnum: 177.84.236.0/22
inetnum: 200.34.216.0/22
as-in: from AS3356 100 accept ANY
as-in: from AS16735 100 accept ANY
as-in: from AS61633 100 accept ANY
as-out: to AS3356 announce AS61689
as-out: to AS16735 announce AS61689
as-out: to AS61633 announce AS61689

nic-hdl-br: FMABR7
person: FILIPE MATEUS ARAUJO BRANDAO
e-mail: [email protected]
country: BR
created: 20240814
changed: 20240814

nic-hdl-br: ALTEL100
person: ALLREDE TELECOM
e-mail: [email protected]
country: BR
created: 20221129
changed: 20241203

nic-hdl-br: ALTLT97
person: ALLREDE TELECOM LTDA
e-mail: [email protected]
country: BR
created: 20220412
changed: 20230706

% Security and mail abuse issues should also be addressed to
% cert.br, http://www.cert.br/ , respectivelly to [email protected]
% and [email protected]
%
% whois.registro.br accepts only direct match queries. Types
% of queries are: domain (.br), registrant (tax ID), ticket,
% provider, CIDR block, IP and ASN.
% IP Client: 2a10:b641:57:2972:ce36:c665:636d:dad8

% Copyright (c) Nic.br
% The use of the data below is only permitted as described in
% full by the Use and Privacy Policy at https://registro.br/upp ,
% being prohibited its distribution, commercialization or
% reproduction, in particular, to use it for advertising or
% any similar purpose.
% 2024-12-07T03:18:30-03:00 - IP: 2a10:b641:57:2972:ce36:c665:636d:dad8

aut-num: AS61689
owner: FLAVIO GARCIA FERREIRA
ownerid: 11.840.992/0001-81
responsible: FLAVIO GARCIA FERREIRA
country: BR
owner-c: FMABR7
routing-c: ALTEL100
abuse-c: ALTLT97
created: 20140908
changed: 20240105
inetnum: 131.108.124.0/22
inetnum: 2804:1d04::/32
inetnum: 177.84.236.0/22
inetnum: 200.34.216.0/22
as-in: from AS3356 100 accept ANY
as-in: from AS16735 100 accept ANY
as-in: from AS61633 100 accept ANY
as-out: to AS3356 announce AS61689
as-out: to AS16735 announce AS61689
as-out: to AS61633 announce AS61689

nic-hdl-br: FMABR7
person: FILIPE MATEUS ARAUJO BRANDAO
e-mail: [email protected]
country: BR
created: 20240814
changed: 20240814

nic-hdl-br: ALTEL100
person: ALLREDE TELECOM
e-mail: [email protected]
country: BR
created: 20221129
changed: 20241203

nic-hdl-br: ALTLT97
person: ALLREDE TELECOM LTDA
e-mail: [email protected]
country: BR
created: 20220412
changed: 20230706

% Security and mail abuse issues should also be addressed to
% cert.br, http://www.cert.br/ , respectivelly to [email protected]
% and [email protected]
%
% whois.registro.br accepts only direct match queries. Types
% of queries are: domain (.br), registrant (tax ID), ticket,
% provider, CIDR block, IP and ASN.
IP.CC
搜索
IP地址详细信息
AS61689
FLAVIO GARCIA FERREIRA ·www.allrede.com.br
IP地址详细信息
AS61689
FLAVIO GARCIA FERREIRA ·www.allrede.com.br

摘要

  • ASN编号
    AS61689
  • 组织名称
    FLAVIO GARCIA FERREIRA
  • 国家
    Brazil
  • 国家编码
    BR
  • 站点
  • 区域登记
    Lacnic
  • 分配日期
    8th September 2014
  • 分配状态
    Allocated
  • Ipv4前缀
    19
  • Ipv6前缀
    15
  • Ipv4同行
    32
  • Ipv6同行
    18
  • Ipv4上游
    1
  • Ipv6上游
    1

前缀

此 ASN 有 19 个 IPv4 前缀。

国家
公布的前缀
描述
父前缀
RIR
countries.131.108.124.0/23
131.108.124.0/22Lacnic
countries.131.108.124.0/24
131.108.124.0/22Lacnic
Brazil131.108.125.0/24
INFORTEK NETWORKS LTDA -ME
131.108.124.0/22Lacnic
countries.131.108.126.0/23
131.108.124.0/22Lacnic
Brazil131.108.126.0/24
INFORTEK NETWORKS LTDA -ME
131.108.124.0/22Lacnic
Brazil131.108.127.0/24
INFORTEK NETWORKS LTDA -ME
131.108.124.0/22Lacnic
Brazil177.84.236.0/23
INFORTEK NETWORKS LTDA -ME
177.84.236.0/22Lacnic
Brazil177.84.236.0/24
INFORTEK NETWORKS LTDA -ME
177.84.236.0/22Lacnic
Brazil177.84.237.0/24
INFORTEK NETWORKS LTDA -ME
177.84.236.0/22Lacnic
countries.177.84.238.0/23
177.84.236.0/22Lacnic
countries.177.84.238.0/24
177.84.236.0/22Lacnic
Brazil177.84.239.0/24
INFORTEK NETWORKS LTDA -ME
177.84.236.0/22Lacnic
Brazil200.34.216.0/23
INFORTEK NETWORKS LTDA -ME
200.34.216.0/22Lacnic
countries.200.34.216.0/24
200.34.216.0/22Lacnic
countries.200.34.217.0/24
200.34.216.0/22Lacnic
Brazil200.34.218.0/23
INFORTEK NETWORKS LTDA -ME
200.34.216.0/22Lacnic
Brazil200.34.218.0/24
INFORTEK NETWORKS LTDA -ME
200.34.216.0/22Lacnic
Brazil200.34.219.0/24
INFORTEK NETWORKS LTDA -ME
200.34.216.0/22Lacnic
countries.45.238.48.0/22
--IANA
  • 1
IP范围API
使用IP信息强大的IP范围 API获取这些数据和更多信息-快速轻松地识别公司拥有的IP范围。
有用的 游戏技术, 和 广告技术
IP范围API
使用IP信息强大的IP范围 API获取这些数据和更多信息-快速轻松地识别公司拥有的IP范围。
有用的 游戏技术, 和 广告技术

同行

此 ASN 有 32 个 IPv4 对等点。

国家
ASN
描述
IPv6
BrazilAS262324
ALLREDE TELECOM LTDA
true
BrazilAS262663
METROFLEX TELECOMUNICACOES LTDA
false
AS262827
OPERADORA BRASILEIRA DE TELECOMUNICACAO E INTERNET
true
BrazilAS262869
G1Telecom Provedor de Internet LTDA ME
false
BrazilAS263344
wr net informi¿½tica e telecomunicai¿½i¿½es ltda
false
BrazilAS263374
YZO TELECOM TECNOLOGIA EIRELI - ME
false
BrazilAS264368
A. L. A. INFORMATICA LTDA.
false
BrazilAS264386
MMM E G TELECOMUNICACOES LTDA - ME
false
BrazilAS264443
Policanal Servii¿½os de Telecomunicai¿½i¿½es Ltda.
false
BrazilAS265275
L.C.DE CARVALHO CARNEIRO-ME
false
AS266054
SKILL.NET TELECOMUNICACOES LTDA
true
AS266314
ALLREDE TELECOM (STATUS EQUIPAMENTOS VIA RADIO)
true
BrazilAS266399
NUDOZE TELECOMUNICACOES EIRELI
false
AS267249
LOGTEL INTERNET E COMUNICACOES LTDA
true
BrazilAS267351
JOSUEL FRANCISCO DE OLIVEIRA - ME
false
AS267411
LEONARDO RODRIGO FERRO - ME
false
BrazilAS267568
R. C. F. i¿½ TELECOM LTDA i¿½ ME
true
AS267672
C P NET - PROVEDOR DE INTERNET BANDA LARGA LTDA
true
BrazilAS268176
LINK TELECOM EIRELI
false
BrazilAS268308
VIVA CONNECTION TELECOMUNICAi¿½i¿½ES LTDA ME
false
  • 1
  • 2
ASN 数据
每个IP地址和每个ASN相关域的ASN详细信息、分配日期、注册表名称、IP地址总数和分配的前缀。
有用的 网络安全
ASN 数据
每个IP地址和每个ASN相关域的ASN详细信息、分配日期、注册表名称、IP地址总数和分配的前缀。
有用的 网络安全

上游

此 ASN 有 1 个 IPv4 上游。

国家
ASN
描述
IPv6
BrazilAS273683
ALLREDE TELECOM LTDA
true
  • 1
ASN 数据
每个IP地址和每个ASN相关域的ASN详细信息、分配日期、注册表名称、IP地址总数和分配的前缀。
有用的 网络安全
ASN 数据
每个IP地址和每个ASN相关域的ASN详细信息、分配日期、注册表名称、IP地址总数和分配的前缀。
有用的 网络安全

下游

此 ASN 有 1 个 IPv4 下游。

国家
ASN
描述
IPv6
AS266314
ALLREDE TELECOM (STATUS EQUIPAMENTOS VIA RADIO)
true
  • 1
ASN 数据
每个IP地址和每个ASN相关域的ASN详细信息、分配日期、注册表名称、IP地址总数和分配的前缀。
有用的 网络安全
ASN 数据
每个IP地址和每个ASN相关域的ASN详细信息、分配日期、注册表名称、IP地址总数和分配的前缀。
有用的 网络安全

AS61689 Combined Upstream Graph AS61689 AS61689 AS273683 AS273683 AS61689->AS273683 AS3356 AS3356 AS273683->AS3356 AS16735 AS16735 AS273683->AS16735 AS1239 AS1239 AS3356->AS1239 AS3257 AS3257 AS3356->AS3257 AS7018 AS7018 AS3356->AS7018 AS3549 AS3549 AS3356->AS3549 AS1299 AS1299 AS3356->AS1299 AS2914 AS2914 AS3356->AS2914 AS2497 AS2497 AS3356->AS2497 AS209 AS209 AS3356->AS209 AS6453 AS6453 AS3356->AS6453 AS6461 AS6461 AS3356->AS6461 AS174 AS174 AS3356->AS174 AS701 AS701 AS3356->AS701 AS16735->AS174 AS6762 AS6762 AS16735->AS6762
AS61689 Combined Upstream Graph AS61689 AS61689 AS273683 AS273683 AS61689->AS273683 AS3356 AS3356 AS273683->AS3356 AS16735 AS16735 AS273683->AS16735 AS1239 AS1239 AS3356->AS1239 AS3257 AS3257 AS3356->AS3257 AS7018 AS7018 AS3356->AS7018 AS3549 AS3549 AS3356->AS3549 AS1299 AS1299 AS3356->AS1299 AS2914 AS2914 AS3356->AS2914 AS2497 AS2497 AS3356->AS2497 AS209 AS209 AS3356->AS209 AS6453 AS6453 AS3356->AS6453 AS6461 AS6461 AS3356->AS6461 AS174 AS174 AS3356->AS174 AS701 AS701 AS3356->AS701 AS16735->AS174 AS6762 AS6762 AS16735->AS6762

世界地图

WHOIS详细信息

% IP Client: 2a10:b641:57:2972:ce36:c665:636d:dad8

% Copyright (c) Nic.br
% The use of the data below is only permitted as described in
% full by the Use and Privacy Policy at https://registro.br/upp ,
% being prohibited its distribution, commercialization or
% reproduction, in particular, to use it for advertising or
% any similar purpose.
% 2024-12-07T03:18:30-03:00 - IP: 2a10:b641:57:2972:ce36:c665:636d:dad8

aut-num: AS61689
owner: FLAVIO GARCIA FERREIRA
ownerid: 11.840.992/0001-81
responsible: FLAVIO GARCIA FERREIRA
country: BR
owner-c: FMABR7
routing-c: ALTEL100
abuse-c: ALTLT97
created: 20140908
changed: 20240105
inetnum: 131.108.124.0/22
inetnum: 2804:1d04::/32
inetnum: 177.84.236.0/22
inetnum: 200.34.216.0/22
as-in: from AS3356 100 accept ANY
as-in: from AS16735 100 accept ANY
as-in: from AS61633 100 accept ANY
as-out: to AS3356 announce AS61689
as-out: to AS16735 announce AS61689
as-out: to AS61633 announce AS61689

nic-hdl-br: FMABR7
person: FILIPE MATEUS ARAUJO BRANDAO
e-mail: [email protected]
country: BR
created: 20240814
changed: 20240814

nic-hdl-br: ALTEL100
person: ALLREDE TELECOM
e-mail: [email protected]
country: BR
created: 20221129
changed: 20241203

nic-hdl-br: ALTLT97
person: ALLREDE TELECOM LTDA
e-mail: [email protected]
country: BR
created: 20220412
changed: 20230706

% Security and mail abuse issues should also be addressed to
% cert.br, http://www.cert.br/ , respectivelly to [email protected]
% and [email protected]
%
% whois.registro.br accepts only direct match queries. Types
% of queries are: domain (.br), registrant (tax ID), ticket,
% provider, CIDR block, IP and ASN.
% IP Client: 2a10:b641:57:2972:ce36:c665:636d:dad8

% Copyright (c) Nic.br
% The use of the data below is only permitted as described in
% full by the Use and Privacy Policy at https://registro.br/upp ,
% being prohibited its distribution, commercialization or
% reproduction, in particular, to use it for advertising or
% any similar purpose.
% 2024-12-07T03:18:30-03:00 - IP: 2a10:b641:57:2972:ce36:c665:636d:dad8

aut-num: AS61689
owner: FLAVIO GARCIA FERREIRA
ownerid: 11.840.992/0001-81
responsible: FLAVIO GARCIA FERREIRA
country: BR
owner-c: FMABR7
routing-c: ALTEL100
abuse-c: ALTLT97
created: 20140908
changed: 20240105
inetnum: 131.108.124.0/22
inetnum: 2804:1d04::/32
inetnum: 177.84.236.0/22
inetnum: 200.34.216.0/22
as-in: from AS3356 100 accept ANY
as-in: from AS16735 100 accept ANY
as-in: from AS61633 100 accept ANY
as-out: to AS3356 announce AS61689
as-out: to AS16735 announce AS61689
as-out: to AS61633 announce AS61689

nic-hdl-br: FMABR7
person: FILIPE MATEUS ARAUJO BRANDAO
e-mail: [email protected]
country: BR
created: 20240814
changed: 20240814

nic-hdl-br: ALTEL100
person: ALLREDE TELECOM
e-mail: [email protected]
country: BR
created: 20221129
changed: 20241203

nic-hdl-br: ALTLT97
person: ALLREDE TELECOM LTDA
e-mail: [email protected]
country: BR
created: 20220412
changed: 20230706

% Security and mail abuse issues should also be addressed to
% cert.br, http://www.cert.br/ , respectivelly to [email protected]
% and [email protected]
%
% whois.registro.br accepts only direct match queries. Types
% of queries are: domain (.br), registrant (tax ID), ticket,
% provider, CIDR block, IP and ASN.
什么是ASN?
自治系统号(ASN)被分配给控制IP地址块的实体,如互联网服务提供商和其他大型组织。此网络页面以及显示在主IP地址信息页面上并在地理位置API中返回的组织字段基于ASN。
IP.CC

API,建立在安全、网络个性化、营销等方面

对于金融服务业和金融科技公司,IP。CC是一个非常宝贵的工具。我们在金融行业的客户喜欢我们的工作,我们很高兴向您展示原因。
IP.CC

我们的IP工具

探索所有工具IP.CC
  • IP.CCPing

    Ping是一个免费工具,可以帮助您找到可以使用ICMP协议Ping的IP地址。您可以查找IP地址或CIDR块。

    尝试 PingIP.CC
  • IP.CCDNS

    DNS是一种用于确定与IP地址关联的主机名的技术。这是在主机名注册表和注册器表中搜索PTR记录完成的。

    尝试 DNSIP.CC
  • IP.CCPort

    Port是一个免费工具,用于检测设备上的开放端口。它会自动检测IP地址并扫描您的设备,识别黑客通过的开放和易受攻击的端口。

    尝试 PortIP.CC
常见问题