IP.CC
搜索
IP地址详细信息
AS13786
Seabras 1 USA, LLC·www.seabornnetworks.com
IP地址详细信息
AS13786
Seabras 1 USA, LLC·www.seabornnetworks.com
  • 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
    AS13786
  • 组织名称
    Seabras 1 USA, LLC
  • 国家
  • 国家编码
  • 站点
  • 区域登记
    IANA
  • 分配日期
    24th August 2018
  • 分配状态
    Assigned
  • Ipv4前缀
    9
  • Ipv6前缀
    10
  • Ipv4同行
    192
  • Ipv6同行
    171
  • Ipv4上游
    5
  • Ipv6上游
    5

前缀

此 ASN 有 9 个 IPv4 前缀。

国家
公布的前缀
描述
父前缀
RIR
United States207.135.208.0/21
Seabras 1 USA, LLC
--ARIN
United States207.135.208.0/24
SEABORN-NYC
207.135.208.0/21ARIN
Brazil207.135.210.0/24
SEABORN-GRU
207.135.208.0/21ARIN
Brazil207.135.211.0/24
SEABORN-GRU
207.135.208.0/21ARIN
United States207.135.212.0/24
Seabras 1 USA, LLC
207.135.208.0/21ARIN
United States207.135.213.0/24
Seabras 1 USA, LLC
207.135.208.0/21ARIN
United States216.246.124.0/24
Server Central Network
216.246.0.0/17ARIN
countries.45.177.100.0/22
--IANA
countries.45.177.100.0/24
--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 192 个 IPv4 对等点。

国家
ASN
描述
IPv6
AS139341
true
BrazilAS14282
PERSIS TELECOM
true
BrazilAS14463
TDKOM INFORMi¿½TICA LTDA
true
AS14593
true
AS15695
true
AS16839
true
AS174
true
AS18106
true
AS19844
SBA Edge, LLC
true
BrazilAS21574
Century Telecom Ltda
true
BrazilAS22356
Durand do Brasil Ltda
true
BrazilAS23105
BCMG INTERNET LTDA
false
BrazilAS23106
AMERICAN TOWER DO BRASIL-COMUNICAi¿½i¿½O MULTIMi¿½DIA LT
true
AS23352
true
BrazilAS262285
VIVAS TELECOMUNICACOES LTDA
true
BrazilAS262367
SW COMERCIO E SERVICOS DE COMUNICACAO MULTIMIDIA
true
BrazilAS262459
Osirnet Info Telecom Ltda.
true
AS262493
Webby Tecnologia Ltda
true
BrazilAS262587
CST - Cerentini Solui¿½i¿½es em Tecnologia
true
AS262663
true
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
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 5 个 IPv4 上游。

国家
ASN
描述
IPv6
AS174
true
BrazilAS22356
Durand do Brasil Ltda
true
AS2914
true
AS3356
true
AS6939
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 162 个 IPv4 下游。

国家
ASN
描述
IPv6
AS139341
true
BrazilAS14463
TDKOM INFORMi¿½TICA LTDA
true
AS14593
true
AS15695
true
AS16839
true
AS19844
SBA Edge, LLC
true
BrazilAS21574
Century Telecom Ltda
true
BrazilAS23105
BCMG INTERNET LTDA
false
BrazilAS23106
AMERICAN TOWER DO BRASIL-COMUNICAi¿½i¿½O MULTIMi¿½DIA LT
false
AS23352
true
BrazilAS262285
VIVAS TELECOMUNICACOES LTDA
true
BrazilAS262367
SW COMERCIO E SERVICOS DE COMUNICACAO MULTIMIDIA
true
AS262493
Webby Tecnologia Ltda
true
BrazilAS262587
CST - Cerentini Solui¿½i¿½es em Tecnologia
true
AS262663
true
BrazilAS262675
Solucao Network Provedor Ltda
true
BrazilAS262725
RG SILVEIRA LTDA
true
BrazilAS262847
DBUG TELECOM LTDA
true
BrazilAS262854
AFINET SOLUCOES EM TECNOLOGIA DA INFORMACAO LTDA
true
BrazilAS262903
Tubaron Telecom
true
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
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

AS13786 Combined Upstream Graph AS13786 AS13786 AS174 AS174 AS13786->AS174 AS2914 AS2914 AS13786->AS2914 AS7195 AS7195 AS13786->AS7195 AS1299 AS1299 AS174->AS1299 AS2497 AS2497 AS174->AS2497 AS3356 AS3356 AS174->AS3356 AS701 AS701 AS174->AS701 AS3257 AS3257 AS174->AS3257 AS2914->AS1299 AS2914->AS2497 AS2914->AS3356 AS2914->AS3257 AS7018 AS7018 AS2914->AS7018 AS1239 AS1239 AS2914->AS1239 AS7195->AS3356 AS209 AS209 AS3356->AS209 AS3549 AS3549 AS3356->AS3549
AS13786 Combined Upstream Graph AS13786 AS13786 AS174 AS174 AS13786->AS174 AS2914 AS2914 AS13786->AS2914 AS7195 AS7195 AS13786->AS7195 AS1299 AS1299 AS174->AS1299 AS2497 AS2497 AS174->AS2497 AS3356 AS3356 AS174->AS3356 AS701 AS701 AS174->AS701 AS3257 AS3257 AS174->AS3257 AS2914->AS1299 AS2914->AS2497 AS2914->AS3356 AS2914->AS3257 AS7018 AS7018 AS2914->AS7018 AS1239 AS1239 AS2914->AS1239 AS7195->AS3356 AS209 AS209 AS3356->AS209 AS3549 AS3549 AS3356->AS3549

世界地图

WHOIS详细信息


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#


ASNumber: 13786
ASName: SEABORN
ASHandle: AS13786
RegDate: 2018-08-24
Updated: 2024-07-11
Ref: https://rdap.arin.net/registry/autnum/13786


OrgName: Seabras 1 USA, LLC
OrgId: SUL-46
Address: 600 Cummings Center, Suite 268Z
City: Beverly
StateProv: MA
PostalCode: 01915
Country: US
RegDate: 2018-07-11
Updated: 2024-11-25
Ref: https://rdap.arin.net/registry/entity/SUL-46


OrgTechHandle: SIE3-ARIN
OrgTechName: SEABORN IP ENGINEERING
OrgTechPhone: +1-978-471-3148
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/SIE3-ARIN

OrgAbuseHandle: NOC33013-ARIN
OrgAbuseName: Network Operations Center
OrgAbusePhone: +1-201-351-5806
OrgAbuseEmail: [email protected]
OrgAbuseRef: https://rdap.arin.net/registry/entity/NOC33013-ARIN

RTechHandle: IHCM-ARIN
RTechName: Magalhaes, Igor Henrique Campos
RTechPhone: +55 31 98319-3261
RTechEmail: [email protected]
RTechRef: https://rdap.arin.net/registry/entity/IHCM-ARIN

RTechHandle: LCA142-ARIN
RTechName: ALMEIDA, LEONARDO CESAR
RTechPhone: +5511971013500
RTechEmail: [email protected]
RTechRef: https://rdap.arin.net/registry/entity/LCA142-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#


ASNumber: 13786
ASName: SEABORN
ASHandle: AS13786
RegDate: 2018-08-24
Updated: 2024-07-11
Ref: https://rdap.arin.net/registry/autnum/13786


OrgName: Seabras 1 USA, LLC
OrgId: SUL-46
Address: 600 Cummings Center, Suite 268Z
City: Beverly
StateProv: MA
PostalCode: 01915
Country: US
RegDate: 2018-07-11
Updated: 2024-11-25
Ref: https://rdap.arin.net/registry/entity/SUL-46


OrgTechHandle: SIE3-ARIN
OrgTechName: SEABORN IP ENGINEERING
OrgTechPhone: +1-978-471-3148
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/SIE3-ARIN

OrgAbuseHandle: NOC33013-ARIN
OrgAbuseName: Network Operations Center
OrgAbusePhone: +1-201-351-5806
OrgAbuseEmail: [email protected]
OrgAbuseRef: https://rdap.arin.net/registry/entity/NOC33013-ARIN

RTechHandle: IHCM-ARIN
RTechName: Magalhaes, Igor Henrique Campos
RTechPhone: +55 31 98319-3261
RTechEmail: [email protected]
RTechRef: https://rdap.arin.net/registry/entity/IHCM-ARIN

RTechHandle: LCA142-ARIN
RTechName: ALMEIDA, LEONARDO CESAR
RTechPhone: +5511971013500
RTechEmail: [email protected]
RTechRef: https://rdap.arin.net/registry/entity/LCA142-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#

IX

IP.CC
搜索
IP地址详细信息
AS13786
Seabras 1 USA, LLC·www.seabornnetworks.com
IP地址详细信息
AS13786
Seabras 1 USA, LLC·www.seabornnetworks.com

摘要

  • ASN编号
    AS13786
  • 组织名称
    Seabras 1 USA, LLC
  • 国家
  • 国家编码
  • 站点
  • 区域登记
    IANA
  • 分配日期
    24th August 2018
  • 分配状态
    Assigned
  • Ipv4前缀
    9
  • Ipv6前缀
    10
  • Ipv4同行
    192
  • Ipv6同行
    171
  • Ipv4上游
    5
  • Ipv6上游
    5

前缀

此 ASN 有 9 个 IPv4 前缀。

国家
公布的前缀
描述
父前缀
RIR
United States207.135.208.0/21
Seabras 1 USA, LLC
--ARIN
United States207.135.208.0/24
SEABORN-NYC
207.135.208.0/21ARIN
Brazil207.135.210.0/24
SEABORN-GRU
207.135.208.0/21ARIN
Brazil207.135.211.0/24
SEABORN-GRU
207.135.208.0/21ARIN
United States207.135.212.0/24
Seabras 1 USA, LLC
207.135.208.0/21ARIN
United States207.135.213.0/24
Seabras 1 USA, LLC
207.135.208.0/21ARIN
United States216.246.124.0/24
Server Central Network
216.246.0.0/17ARIN
countries.45.177.100.0/22
--IANA
countries.45.177.100.0/24
--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 192 个 IPv4 对等点。

国家
ASN
描述
IPv6
AS139341
true
BrazilAS14282
PERSIS TELECOM
true
BrazilAS14463
TDKOM INFORMi¿½TICA LTDA
true
AS14593
true
AS15695
true
AS16839
true
AS174
true
AS18106
true
AS19844
SBA Edge, LLC
true
BrazilAS21574
Century Telecom Ltda
true
BrazilAS22356
Durand do Brasil Ltda
true
BrazilAS23105
BCMG INTERNET LTDA
false
BrazilAS23106
AMERICAN TOWER DO BRASIL-COMUNICAi¿½i¿½O MULTIMi¿½DIA LT
true
AS23352
true
BrazilAS262285
VIVAS TELECOMUNICACOES LTDA
true
BrazilAS262367
SW COMERCIO E SERVICOS DE COMUNICACAO MULTIMIDIA
true
BrazilAS262459
Osirnet Info Telecom Ltda.
true
AS262493
Webby Tecnologia Ltda
true
BrazilAS262587
CST - Cerentini Solui¿½i¿½es em Tecnologia
true
AS262663
true
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
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 5 个 IPv4 上游。

国家
ASN
描述
IPv6
AS174
true
BrazilAS22356
Durand do Brasil Ltda
true
AS2914
true
AS3356
true
AS6939
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 162 个 IPv4 下游。

国家
ASN
描述
IPv6
AS139341
true
BrazilAS14463
TDKOM INFORMi¿½TICA LTDA
true
AS14593
true
AS15695
true
AS16839
true
AS19844
SBA Edge, LLC
true
BrazilAS21574
Century Telecom Ltda
true
BrazilAS23105
BCMG INTERNET LTDA
false
BrazilAS23106
AMERICAN TOWER DO BRASIL-COMUNICAi¿½i¿½O MULTIMi¿½DIA LT
false
AS23352
true
BrazilAS262285
VIVAS TELECOMUNICACOES LTDA
true
BrazilAS262367
SW COMERCIO E SERVICOS DE COMUNICACAO MULTIMIDIA
true
AS262493
Webby Tecnologia Ltda
true
BrazilAS262587
CST - Cerentini Solui¿½i¿½es em Tecnologia
true
AS262663
true
BrazilAS262675
Solucao Network Provedor Ltda
true
BrazilAS262725
RG SILVEIRA LTDA
true
BrazilAS262847
DBUG TELECOM LTDA
true
BrazilAS262854
AFINET SOLUCOES EM TECNOLOGIA DA INFORMACAO LTDA
true
BrazilAS262903
Tubaron Telecom
true
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
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

AS13786 Combined Upstream Graph AS13786 AS13786 AS174 AS174 AS13786->AS174 AS2914 AS2914 AS13786->AS2914 AS7195 AS7195 AS13786->AS7195 AS1299 AS1299 AS174->AS1299 AS2497 AS2497 AS174->AS2497 AS3356 AS3356 AS174->AS3356 AS701 AS701 AS174->AS701 AS3257 AS3257 AS174->AS3257 AS2914->AS1299 AS2914->AS2497 AS2914->AS3356 AS2914->AS3257 AS7018 AS7018 AS2914->AS7018 AS1239 AS1239 AS2914->AS1239 AS7195->AS3356 AS209 AS209 AS3356->AS209 AS3549 AS3549 AS3356->AS3549
AS13786 Combined Upstream Graph AS13786 AS13786 AS174 AS174 AS13786->AS174 AS2914 AS2914 AS13786->AS2914 AS7195 AS7195 AS13786->AS7195 AS1299 AS1299 AS174->AS1299 AS2497 AS2497 AS174->AS2497 AS3356 AS3356 AS174->AS3356 AS701 AS701 AS174->AS701 AS3257 AS3257 AS174->AS3257 AS2914->AS1299 AS2914->AS2497 AS2914->AS3356 AS2914->AS3257 AS7018 AS7018 AS2914->AS7018 AS1239 AS1239 AS2914->AS1239 AS7195->AS3356 AS209 AS209 AS3356->AS209 AS3549 AS3549 AS3356->AS3549

世界地图

WHOIS详细信息


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#


ASNumber: 13786
ASName: SEABORN
ASHandle: AS13786
RegDate: 2018-08-24
Updated: 2024-07-11
Ref: https://rdap.arin.net/registry/autnum/13786


OrgName: Seabras 1 USA, LLC
OrgId: SUL-46
Address: 600 Cummings Center, Suite 268Z
City: Beverly
StateProv: MA
PostalCode: 01915
Country: US
RegDate: 2018-07-11
Updated: 2024-11-25
Ref: https://rdap.arin.net/registry/entity/SUL-46


OrgTechHandle: SIE3-ARIN
OrgTechName: SEABORN IP ENGINEERING
OrgTechPhone: +1-978-471-3148
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/SIE3-ARIN

OrgAbuseHandle: NOC33013-ARIN
OrgAbuseName: Network Operations Center
OrgAbusePhone: +1-201-351-5806
OrgAbuseEmail: [email protected]
OrgAbuseRef: https://rdap.arin.net/registry/entity/NOC33013-ARIN

RTechHandle: IHCM-ARIN
RTechName: Magalhaes, Igor Henrique Campos
RTechPhone: +55 31 98319-3261
RTechEmail: [email protected]
RTechRef: https://rdap.arin.net/registry/entity/IHCM-ARIN

RTechHandle: LCA142-ARIN
RTechName: ALMEIDA, LEONARDO CESAR
RTechPhone: +5511971013500
RTechEmail: [email protected]
RTechRef: https://rdap.arin.net/registry/entity/LCA142-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#


ASNumber: 13786
ASName: SEABORN
ASHandle: AS13786
RegDate: 2018-08-24
Updated: 2024-07-11
Ref: https://rdap.arin.net/registry/autnum/13786


OrgName: Seabras 1 USA, LLC
OrgId: SUL-46
Address: 600 Cummings Center, Suite 268Z
City: Beverly
StateProv: MA
PostalCode: 01915
Country: US
RegDate: 2018-07-11
Updated: 2024-11-25
Ref: https://rdap.arin.net/registry/entity/SUL-46


OrgTechHandle: SIE3-ARIN
OrgTechName: SEABORN IP ENGINEERING
OrgTechPhone: +1-978-471-3148
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/SIE3-ARIN

OrgAbuseHandle: NOC33013-ARIN
OrgAbuseName: Network Operations Center
OrgAbusePhone: +1-201-351-5806
OrgAbuseEmail: [email protected]
OrgAbuseRef: https://rdap.arin.net/registry/entity/NOC33013-ARIN

RTechHandle: IHCM-ARIN
RTechName: Magalhaes, Igor Henrique Campos
RTechPhone: +55 31 98319-3261
RTechEmail: [email protected]
RTechRef: https://rdap.arin.net/registry/entity/IHCM-ARIN

RTechHandle: LCA142-ARIN
RTechName: ALMEIDA, LEONARDO CESAR
RTechPhone: +5511971013500
RTechEmail: [email protected]
RTechRef: https://rdap.arin.net/registry/entity/LCA142-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#

IX

相关网络
  • AS13779
    Basis Technology
  • AS13781
    Hopkinsville Electric System
  • AS13782
    The First American Financial Corporation
  • AS13784
    Air Force Systems Networking
  • AS13787
    CenturyLink Communications, LLC
  • AS13788
    US Courts
  • AS13789
    Unitas Global
  • AS13790
    Unitas Global
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