[REN-BGP-stats-all] Global R&E Routing Table Report - CERNET R&E view

REN Routing Table Report cscora at frr.nsrc.org
Sun May 23 20:45:12 UTC 2021


Global R&E Routing Table Report   20:45 GMT Sun 23 May, 2021

Report Website:     https://bgp.nsrc.org/REN
Detailed Analysis:  https://bgp.nsrc.org/REN/CERNET/

Analysis Summary
----------------

BGP routing table entries examined:                               17365
    Prefixes after maximum aggregation (per Origin AS):            9816
    Deaggregation factor:                                          1.77
    Unique aggregates announced (without unneeded subnets):       11066
Total ASes present in the Internet Routing Table:                  2635
    Prefixes per ASN:                                              6.59
Origin-only ASes present in the Internet Routing Table:            2261
Origin ASes announcing only one prefix:                            1067
Transit ASes present in the Internet Routing Table:                 374
Transit-only ASes present in the Internet Routing Table:             59
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      16
    Max AS path prepend of ASN ( 10497)                              11
Prefixes from unregistered ASNs in the Routing Table:                15
    Number of instances of unregistered ASNs:                        15
Number of 32-bit ASNs allocated by the RIRs:                      36111
Number of 32-bit ASNs visible in the Routing Table:                 567
Prefixes from 32-bit ASNs in the Routing Table:                    1576
Number of bogon 32-bit ASNs visible in the Routing Table:             0
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:              2
Number of addresses announced to Internet:                    197196752
    Equivalent to 11 /8s, 192 /16s and 251 /24s
    Percentage of available address space announced:                5.3
    Percentage of allocated address space announced:                5.3
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.5
Total number of prefixes smaller than registry allocations:        2178

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                     3855
    Total APNIC prefixes after maximum aggregation:                2171
    APNIC Deaggregation factor:                                    1.78
Prefixes being announced from the APNIC address blocks:            3857
    Unique aggregates announced from the APNIC address blocks:     2556
APNIC Region origin ASes present in the Internet Routing Table:     539
    APNIC Prefixes per ASN:                                        7.16
APNIC Region origin ASes announcing only one prefix:                238
APNIC Region transit ASes present in the Internet Routing Table:     52
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         14
Number of APNIC region 32-bit ASNs visible in the Routing Table:    199
Number of APNIC addresses announced to Internet:               45122304
    Equivalent to 2 /8s, 176 /16s and 131 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-147769
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                      7491
    Total ARIN prefixes after maximum aggregation:                 4109
    ARIN Deaggregation factor:                                     1.82
Prefixes being announced from the ARIN address blocks:             7516
    Unique aggregates announced from the ARIN address blocks:      4642
ARIN Region origin ASes present in the Internet Routing Table:     1141
    ARIN Prefixes per ASN:                                         6.59
ARIN Region origin ASes announcing only one prefix:                 418
ARIN Region transit ASes present in the Internet Routing Table:     156
Average ARIN Region AS path length visible:                         4.4
    Max ARIN Region AS path length visible:                          16
Number of ARIN region 32-bit ASNs visible in the Routing Table:     143
Number of ARIN addresses announced to Internet:                86973328
    Equivalent to 5 /8s, 47 /16s and 27 /24s
ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  47/8,  48/8,  50/8,  52/8,  53/8,
                        54/8,  55/8,  56/8,  57/8,  63/8,  64/8,  65/8,
                        66/8,  67/8,  68/8,  69/8,  70/8,  71/8,  72/8,
                        73/8,  74/8,  75/8,  76/8,  96/8,  97/8,  98/8,
                        99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
                       130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
                       138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
                       147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
                       158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
                       166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
                       174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
                       206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
                      

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                      3374
    Total RIPE prefixes after maximum aggregation:                 2748
    RIPE Deaggregation factor:                                     1.23
Prefixes being announced from the RIPE address blocks:             3362
    Unique aggregates announced from the RIPE address blocks:      2745
RIPE Region origin ASes present in the Internet Routing Table:      671
    RIPE Prefixes per ASN:                                         5.01
RIPE Region origin ASes announcing only one prefix:                 318
RIPE Region transit ASes present in the Internet Routing Table:     109
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          14
Number of RIPE region 32-bit ASNs visible in the Routing Table:     128
Number of RIPE addresses announced to Internet:                58208768
    Equivalent to 3 /8s, 120 /16s and 50 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-213403
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                    1444
    Total LACNIC prefixes after maximum aggregation:                587
    LACNIC Deaggregation factor:                                   2.46
Prefixes being announced from the LACNIC address blocks:           1442
    Unique aggregates announced from the LACNIC address blocks:     822
LACNIC Region origin ASes present in the Internet Routing Table:    176
    LACNIC Prefixes per ASN:                                       8.19
LACNIC Region origin ASes announcing only one prefix:                72
LACNIC Region transit ASes present in the Internet Routing Table:    28
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        13
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    76
Number of LACNIC addresses announced to Internet:               4188736
    Equivalent to 0 /8s, 63 /16s and 234 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-272796 + ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                   1186
    Total AfriNIC prefixes after maximum aggregation:               187
    AfriNIC Deaggregation factor:                                  6.34
Prefixes being announced from the AfriNIC address blocks:          1186
    Unique aggregates announced from the AfriNIC address blocks:    299
AfriNIC Region origin ASes present in the Internet Routing Table:    46
    AfriNIC Prefixes per ASN:                                     25.78
AfriNIC Region origin ASes announcing only one prefix:               21
AfriNIC Region transit ASes present in the Internet Routing Table:   12
Average AfriNIC Region AS path length visible:                      4.3
    Max AfriNIC Region AS path length visible:                       13
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   21
Number of AfriNIC addresses announced to Internet:              2703104
    Equivalent to 0 /8s, 41 /16s and 63 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
                      

APNIC Region per AS prefix count summary
----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2907         607       2155     455  SINET-AS Research Organization of Infor
  1237         191         75     137  KREONET-AS-KR KISTI, KR
  7575         187        331     133  AARNET-AS-AP Australian Academic and Re
 58647         164         18       2  KAGAWAU-AS Kagawa University, JP
 55824         128         19      22  NKN-CORE-NW NKN Core Network, IN
  4538         111       4160      69  ERX-CERNET-BKB China Education and Rese
  4621          82         37      11  UNINET-AS-AP UNINET-, TH
 23570          59          5      11  INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
  1659          57       1450      34  ERX-TANET-ASN1 Taiwan Academic Network 
  2697          55          3      31  ERX-ERNET-AS Education and Research Net

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  7896         259         51       7  NU-AS, US
   376         234        180     158  RISQ-AS, CA
  5786         194         16       1  UPRENET, PR
  2152         160        507      92  CSUNET-NW, US
 18558         136         18       4  NETBLK-RCOEK, US
  2920         112         34       6  LACOE, US
 21976          86         51      18  NJEDGE-NET, US
 22742          86         62      44  CT-EDU-NET, US
  1736          80         16       1  MU-AS, US
     3          78        528      13  MIT-GATEWAYS, US

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
   680         273       1996     235  DFN Verein zur Foerderung eines Deutsch
   786         187       1787     185  JANET Jisc Services Limited, GB
  8895         140         24       4  ISU Internet Services Unit (ISU), SA
   559         116        550     107  SWITCH Peering requests: (peering at switc
  1103          98       1520      85  SURFNET-NL SURFnet, The Netherlands, NL
   137          82        677      77  ASGARR Consortium GARR, IT
   553          72        449      72  BELWUE BelWue-Koordination, DE
  2200          66        647      61  FR-RENATER Reseau National de telecommu
  2614          62         32      59  ROEDUNET, RO
  1930          56         82      51  RCCN Fundacao para a Ciencia e a Tecnol

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  1916         203        215      41  Associacao Rede Nacional de Ensino e Pe
 28391         152         10      66  Universidad Juarez Autonoma de Tabasco,
 11340          93         24      54  Red Universitaria Nacional, CL
  1251          66         37      20  FUNDACAO DE AMPARO A PESQUISA DO ESTADO
  2715          60        102      40  Fundacao Carlos Chagas Filho de Amparo 
 19611          45         17       2  Associacao Antonio Vieira - Unisinos, B
  4270          44         16       1  Red de Interconexion Universitaria, AR
 61468          41          3      15  CEDIA, EC
 28614          38          2       2  Fundacao Universidade Regional de Blume
 28571          37         26      15  UNIVERSIDADE DE SAO PAULO, BR

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 36914         414         82       3  KENET-AS, KE
  2018         322        319      74  TENET-1, ZA
327687         133         28       3  RENU, UG
  2561          74          5      34  EUN, EG
  8094          55         48       4  PUKNET, ZA
327700          39         16       1  MoRENet, MZ
 37215          29          8       1  MAREN, MW
  6879          24          2       9  ENSTINET-, EG
 37074          11          8       2  UG-AS, GH
 37501          11         49       6  UOFS, ZA

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2907         607       2155     455  SINET-AS Research Organization of Infor
 36914         414         82       3  KENET-AS, KE
  2018         322        319      74  TENET-1, ZA
   680         273       1996     235  DFN Verein zur Foerderung eines Deutsch
  7896         259         51       7  NU-AS, US
   376         234        180     158  RISQ-AS, CA
  1916         203        215      41  Associacao Rede Nacional de Ensino e Pe
  5786         194         16       1  UPRENET, PR
  1237         191         75     137  KREONET-AS-KR KISTI, KR
   786         187       1787     185  JANET Jisc Services Limited, GB

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
 36914         414          411  KENET-AS, KE
  7896         259          252  NU-AS, US
  2018         322          248  TENET-1, ZA
  5786         194          193  UPRENET, PR
  1916         203          162  Associacao Rede Nacional de Ensino e Pesquisa, 
 58647         164          162  KAGAWAU-AS Kagawa University, JP
  8895         140          136  ISU Internet Services Unit (ISU), SA
 18558         136          132  NETBLK-RCOEK, US
327687         133          130  RENU, UG
 55824         128          106  NKN-CORE-NW NKN Core Network, IN

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     36843  UNALLOCATED  64.56.80.0/23            11096  FLORIDANET, US
     19658  UNALLOCATED  65.205.131.0/24          11096  FLORIDANET, US
     36843  UNALLOCATED  108.59.20.0/24           11096  FLORIDANET, US
     36843  UNALLOCATED  108.59.23.0/24           11096  FLORIDANET, US
     36843  UNALLOCATED  131.91.183.0/24          11096  FLORIDANET, US
     36843  UNALLOCATED  131.91.252.0/22          11096  FLORIDANET, US
     36843  UNALLOCATED  146.201.218.0/24         11096  FLORIDANET, US
     36843  UNALLOCATED  146.201.219.0/24         11096  FLORIDANET, US
     22063  UNALLOCATED  153.10.0.0/16             2152  CSUNET-NW, US
     36843  UNALLOCATED  162.223.23.0/24          11096  FLORIDANET, US

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             1103  SURFNET-NL SURFnet, The Netherlands, NL

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-dsua

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
192.31.196.0/24      Origin:       112  UNASSIGNED
                    Transit:      1103  SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24       Origin:      1103  SURFNET-NL SURFnet, The Netherlands, NL
                    Transit:     11537  INTERNET2-RESEARCH-EDU, US

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:0        /9:1       /10:2       /11:1       /12:10      
/13:18      /14:32      /15:112     /16:1931    /17:371     /18:415     
/19:540     /20:792     /21:827     /22:1327    /23:1339    /24:9529    
/25:48      /26:31      /27:38      /28:1       /29:0       /30:0       
/31:0       /32:0       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
 36914         386         414  KENET-AS, KE
  8895         135         140  ISU Internet Services Unit (ISU), SA
 23024          53          56  OCDE, US
327700          33          39  MoRENet, MZ
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
 25977          31          45  HCCS, US
263282          30          37  FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN
 27609          29          45  USC-UNIVERSITY-HOSPITAL, US
 32440          29          44  LONI, US
 40326          29          33  ECKERD-COLLEGE, US

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:3         5:15        8:2        12:1        14:84       18:41     
  23:5        24:6        31:6        37:6        38:9        40:1      
  41:234      42:1        44:5        45:56       46:7        47:1      
  49:8        50:1        52:1        59:3        61:4        62:7      
  63:34       64:46       65:2        66:38       67:44       68:8      
  69:17       71:1        72:11       74:19       76:32       77:5      
  78:3        79:10       80:14       81:32       82:4        83:8      
  84:8        85:34       86:9        87:1        88:1        89:10     
  91:47       92:1        93:12       94:4        95:4        96:6      
  97:1        98:2       101:4       102:7       103:265     104:14     
 108:8       109:8       110:3       111:20      112:4       114:23     
 115:1       116:4       117:61      118:3       119:3       121:20     
 125:5       128:79      129:220     130:91      131:89      132:60     
 133:137     134:89      136:185     137:145     138:9       139:5      
 140:34      141:2       142:43      143:35      144:67      146:123    
 147:61      148:159     149:13      150:34      151:5       152:75     
 153:11      154:24      155:51      156:64      157:25      158:45     
 159:19      160:26      161:16      162:16      163:61      164:40     
 165:14      166:1       167:15      168:124     169:9       170:51     
 171:1       172:1       173:2       175:31      176:8       177:7      
 178:1       179:12      180:20      181:11      182:6       184:6      
 185:39      186:3       187:18      188:15      189:6       190:44     
 191:36      192:1247    193:246     194:143     195:101     196:167    
 197:201     198:445     199:236     200:252     201:39      202:515    
 203:414     204:346     205:173     206:180     207:170     208:58     
 209:111     210:116     211:13      212:165     213:4       216:65     
 217:16      218:6       219:7       220:24      222:2      

End of report


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