[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view

REN Routing Table Report cscora at frr.nsrc.org
Tue May 3 20:10:34 UTC 2022


IPv4 R&E Routing Table Report   20:10 GMT Tue 03 May, 2022

  IPv4 BGP Table (R&E) as seen at CERNET.

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

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

BGP routing table entries examined:                               17034
    Prefixes after maximum aggregation (per Origin AS):            9883
    Deaggregation factor:                                          1.72
    Unique aggregates announced (without unneeded subnets):       11061
    Number of IPv4 prefixes with a valid ROA:                      3981
    Number of IPv4 prefixes with an invalid ROA:                     20
    Number of IPv4 prefixes with no ROA:                          13033
Total ASes present in the Internet Routing Table:                  2638
    Prefixes per ASN:                                              6.46
Origin-only ASes present in the Internet Routing Table:            2274
Origin ASes announcing only one prefix:                            1043
Transit ASes present in the Internet Routing Table:                 364
Transit-only ASes present in the Internet Routing Table:             57
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      15
    Max AS path prepend of ASN (  1149)                              11
Prefixes from unregistered ASNs in the Routing Table:                 8
    Number of instances of unregistered ASNs:                         8
Number of 32-bit ASNs allocated by the RIRs:                      39272
Number of 32-bit ASNs visible in the Routing Table:                 594
Prefixes from 32-bit ASNs in the Routing Table:                    1649
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:                    196336528
    Equivalent to 11 /8s, 179 /16s and 219 /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:               99.6
Total number of prefixes smaller than registry allocations:        1892

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

Prefixes being announced by APNIC Region ASes:                     4001
    Total APNIC prefixes after maximum aggregation:                2150
    APNIC Deaggregation factor:                                    1.86
Prefixes being announced from the APNIC address blocks:            4002
    Unique aggregates announced from the APNIC address blocks:     2535
APNIC Region origin ASes present in the Internet Routing Table:     558
    APNIC Prefixes per ASN:                                        7.17
APNIC Region origin ASes announcing only one prefix:                240
APNIC Region transit ASes present in the Internet Routing Table:     61
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         15
Number of APNIC region 32-bit ASNs visible in the Routing Table:    219
Number of APNIC addresses announced to Internet:               45064960
    Equivalent to 2 /8s, 175 /16s and 163 /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, 131072-151865
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:                      7246
    Total ARIN prefixes after maximum aggregation:                 4160
    ARIN Deaggregation factor:                                     1.74
Prefixes being announced from the ARIN address blocks:             7270
    Unique aggregates announced from the ARIN address blocks:      4701
ARIN Region origin ASes present in the Internet Routing Table:     1155
    ARIN Prefixes per ASN:                                         6.29
ARIN Region origin ASes announcing only one prefix:                 426
ARIN Region transit ASes present in the Internet Routing Table:     158
Average ARIN Region AS path length visible:                         4.5
    Max ARIN Region AS path length visible:                          14
Number of ARIN region 32-bit ASNs visible in the Routing Table:     169
Number of ARIN addresses announced to Internet:                86739856
    Equivalent to 5 /8s, 43 /16s and 139 /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:                      3495
    Total RIPE prefixes after maximum aggregation:                 2835
    RIPE Deaggregation factor:                                     1.23
Prefixes being announced from the RIPE address blocks:             3479
    Unique aggregates announced from the RIPE address blocks:      2802
RIPE Region origin ASes present in the Internet Routing Table:      668
    RIPE Prefixes per ASN:                                         5.21
RIPE Region origin ASes announcing only one prefix:                 300
RIPE Region transit ASes present in the Internet Routing Table:      98
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          15
Number of RIPE region 32-bit ASNs visible in the Routing Table:     131
Number of RIPE addresses announced to Internet:                57874688
    Equivalent to 3 /8s, 115 /16s and 25 /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:                    1410
    Total LACNIC prefixes after maximum aggregation:                567
    LACNIC Deaggregation factor:                                   2.49
Prefixes being announced from the LACNIC address blocks:           1407
    Unique aggregates announced from the LACNIC address blocks:     764
LACNIC Region origin ASes present in the Internet Routing Table:    167
    LACNIC Prefixes per ASN:                                       8.43
LACNIC Region origin ASes announcing only one prefix:                69
LACNIC Region transit ASes present in the Internet Routing Table:    23
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:    66
Number of LACNIC addresses announced to Internet:               4153088
    Equivalent to 0 /8s, 63 /16s and 95 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + 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:                    874
    Total AfriNIC prefixes after maximum aggregation:               163
    AfriNIC Deaggregation factor:                                  5.36
Prefixes being announced from the AfriNIC address blocks:           874
    Unique aggregates announced from the AfriNIC address blocks:    257
AfriNIC Region origin ASes present in the Internet Routing Table:    27
    AfriNIC Prefixes per ASN:                                     32.37
AfriNIC Region origin ASes announcing only one prefix:                8
AfriNIC Region transit ASes present in the Internet Routing Table:    9
Average AfriNIC Region AS path length visible:                      3.6
    Max AfriNIC Region AS path length visible:                       10
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    9
Number of AfriNIC addresses announced to Internet:              2503424
    Equivalent to 0 /8s, 38 /16s and 51 /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         577       2140     456  SINET-AS Research Organization of Infor
  1237         187         74     135  KREONET-AS-KR KISTI, KR
  7575         177        330     123  AARNET-AS-AP Australian Academic and Re
 58647         167         18       2  KAGAWAU-AS Kagawa University, JP
 55824         115         18      11  NKN-CORE-NW NKN Core Network, IN
  4538         110       4159      68  ERX-CERNET-BKB China Education and Rese
  4621          79         37      10  UNINET-AS-AP UNINET-, TH
  4762          65          4       1  MAHIDOL-BORDER-AS Mahidol University, T
 23570          59          5      11  INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
  1659          55       1466      35  ERX-TANET-ASN1 Taiwan Academic Network 

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
   376         202        178     151  RISQ-AS, CA
  5786         200         16       1  UPRENET, PR
  2152         150        507      89  CSUNET-NW, US
 18558         135         18       4  NETBLK-RCOEK, US
 23024         114          7      17  OCDE, US
  2920         107         34       6  LACOE, US
 21976          85         51      18  NJEDGE-NET, US
  1736          80         16       1  MU-AS, US
     3          78        496      15  MIT-GATEWAYS, US
  3477          78         71      47  NOAA-NWAVE, 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         281       1968     246  DFN Verein zur Foerderung eines Deutsch
   786         186       1774     183  JANET Jisc Services Limited, GB
  8895         138         24       4  ISU Internet Services Unit ISU, SA
   559         115        550     106  SWITCH Peering requests: peering at switch
  1103          99       1520      86  SURFNET-NL SURFnet, The Netherlands, NL
  2614          96         27      76  ROEDUNET, RO
   137          82        677      77  ASGARR Consortium GARR, IT
   553          73        449      73  BELWUE BelWue-Koordination, DE
  2200          66        647      61  FR-RENATER Reseau National de telecommu
  1930          58         81      53  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         156        208      45  Rede Nacional de Ensino e Pesquisa, BR
 28391         152         10      66  Universidad Juarez Autonoma de Tabasco,
 11340          94         24      54  Red Universitaria Nacional, CL
  1251          60         37      20  FUNDACAO DE AMPARO A PESQUISA DO ESTADO
  2715          58        102      38  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          37          2       2  Fundacao Universidade Regional de Blume
263282          37          5      12  FUNDACAO UNIVERSIDADE DO OESTE DE SANTA

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
  2018         375        319      74  TENET-1, ZA
 36914         207         82       3  KENET-AS, KE
  2561          67          4      32  EUN, EG
  8094          50         48       4  PUKNET, ZA
327687          38         28       3  RENU, UG
327700          36         16       1  MoRENet, MZ
  6879          24          2       9  ENSTINET-, EG
 37182          19          8       1  TERNET, TZ
 37501          11         49       6  UOFS, ZA
 36982           8         33       8  UCT, 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         577       2140     456  SINET-AS Research Organization of Infor
  2018         375        319      74  TENET-1, ZA
   680         281       1968     246  DFN Verein zur Foerderung eines Deutsch
 36914         207         82       3  KENET-AS, KE
   376         202        178     151  RISQ-AS, CA
  5786         200         16       1  UPRENET, PR
  1237         187         74     135  KREONET-AS-KR KISTI, KR
   786         186       1774     183  JANET Jisc Services Limited, GB
  7575         177        330     123  AARNET-AS-AP Australian Academic and Re
 58647         167         18       2  KAGAWAU-AS Kagawa University, JP

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

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

   ASN  No of nets  Net Savings  Description
  2018         375          301  TENET-1, ZA
 36914         207          204  KENET-AS, KE
  5786         200          199  UPRENET, PR
 58647         167          165  KAGAWAU-AS Kagawa University, JP
  8895         138          134  ISU Internet Services Unit ISU, SA
 18558         135          131  NETBLK-RCOEK, US
  1916         156          111  Rede Nacional de Ensino e Pesquisa, BR
 55824         115          104  NKN-CORE-NW NKN Core Network, IN
  2920         107          101  LACOE, US
 23024         114           97  OCDE, US

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
     22063  UNALLOCATED  153.10.0.0/16             2152  CSUNET-NW, US
     22226  UNALLOCATED  156.1.0.0/16              2152  CSUNET-NW, US
     14212  UNALLOCATED  198.189.240.0/24          2152  CSUNET-NW, US
     19658  UNALLOCATED  199.27.241.0/24          11096  FLORIDANET, US
     14212  UNALLOCATED  205.155.0.0/19            2152  CSUNET-NW, US
     14212  UNALLOCATED  205.155.240.0/20          2152  CSUNET-NW, US
    395514  UNALLOCATED  205.213.88.0/24           2381  WISCNET1-AS, US
    394607  UNALLOCATED  216.100.93.0/24          23024  OCDE, US

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

Prefixes from the Special Purpose Address Registry (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-spar

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

Unassigned Network     ASN Information  AS Name
192.31.196.0/24      Origin:       112  UNASSIGNED
192.31.196.0/24     Transit:      1103  SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24       Origin:      1103  SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24      Transit:     20965  GEANT The GEANT IP Service, NL

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      /15:117     /16:1922    /17:387     /18:426     
/19:517     /20:781     /21:786     /22:1329    /23:1385    /24:9314    
/25:3       /26:2       /27:0       /28:1       /29:0       /30:0       
/31:0       /32:0       

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

   ASN  No of nets  Total ann.  Description
 36914         194         207  KENET-AS, KE
  8895         133         138  ISU Internet Services Unit ISU, SA
 23024          53         114  OCDE, US
327700          32          36  MoRENet, MZ
 25977          31          45  HCCS, US
 28614          31          37  Fundacao Universidade Regional de Blumenau, BR
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        14:85       18:43     
  23:9        24:3        31:6        35:4        37:6        38:9      
  40:1        41:126      44:5        45:35       46:6        47:1      
  49:10       50:1        52:1        59:19       61:3        62:7      
  63:34       64:49       66:35       67:43       68:8        69:19     
  70:2        71:1        72:9        74:18       76:33       77:7      
  78:3        79:10       80:17       81:28       82:5        83:6      
  84:9        85:39       86:4        87:1        88:1        89:10     
  91:44       93:23       94:4        95:4        96:5        97:1      
  98:2       101:4       102:6       103:315     104:75      108:8      
 109:10      110:4       111:16      114:23      116:7       117:61     
 118:32      119:4       121:17      122:8       123:8       125:1      
 128:91      129:37      130:93      131:83      132:58      133:140    
 134:92      136:200     137:74      138:9       139:5       140:38     
 141:1       142:41      143:31      144:23      145:2       146:128    
 147:56      148:191     149:12      150:40      151:6       152:75     
 153:13      154:26      155:51      156:67      157:25      158:42     
 159:19      160:25      161:21      162:19      163:63      164:18     
 165:57      166:1       167:16      168:124     169:10      170:52     
 171:1       172:2       173:5       175:30      176:8       177:14     
 179:9       180:20      181:1       182:6       184:10      185:35     
 186:3       187:19      188:13      189:5       190:34      191:33     
 192:1257    193:307     194:141     195:85      196:161     197:112    
 198:436     199:246     200:244     201:38      202:560     203:418    
 204:320     205:161     206:183     207:166     208:66      209:113    
 210:110     211:15      212:148     213:5       216:85      217:11     
 218:3       219:7       220:17      222:2      

End of report


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