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

REN Routing Table Report cscora at frr.nsrc.org
Mon Sep 13 20:10:28 UTC 2021


Global R&E Routing Table Report   20:10 GMT Mon 13 Sep, 2021

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

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

BGP routing table entries examined:                               15894
    Prefixes after maximum aggregation (per Origin AS):            9021
    Deaggregation factor:                                          1.76
    Unique aggregates announced (without unneeded subnets):       10145
Total ASes present in the Internet Routing Table:                  2508
    Prefixes per ASN:                                              6.34
Origin-only ASes present in the Internet Routing Table:            2143
Origin ASes announcing only one prefix:                            1000
Transit ASes present in the Internet Routing Table:                 365
Transit-only ASes present in the Internet Routing Table:             62
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      14
    Max AS path prepend of ASN ( 10497)                              11
Prefixes from unregistered ASNs in the Routing Table:                11
    Number of instances of unregistered ASNs:                        11
Number of 32-bit ASNs allocated by the RIRs:                      37207
Number of 32-bit ASNs visible in the Routing Table:                 489
Prefixes from 32-bit ASNs in the Routing Table:                    1455
Number of bogon 32-bit ASNs visible in the Routing Table:             0
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:              3
Number of addresses announced to Internet:                    193682480
    Equivalent to 11 /8s, 139 /16s and 92 /24s
    Percentage of available address space announced:                5.2
    Percentage of allocated address space announced:                5.2
    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:        1895

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

Prefixes being announced by APNIC Region ASes:                     2860
    Total APNIC prefixes after maximum aggregation:                1545
    APNIC Deaggregation factor:                                    1.85
Prefixes being announced from the APNIC address blocks:            2860
    Unique aggregates announced from the APNIC address blocks:     1823
APNIC Region origin ASes present in the Internet Routing Table:     418
    APNIC Prefixes per ASN:                                        6.84
APNIC Region origin ASes announcing only one prefix:                175
APNIC Region transit ASes present in the Internet Routing Table:     47
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         12
Number of APNIC region 32-bit ASNs visible in the Routing Table:    121
Number of APNIC addresses announced to Internet:               42460448
    Equivalent to 2 /8s, 135 /16s and 229 /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:                      7239
    Total ARIN prefixes after maximum aggregation:                 3940
    ARIN Deaggregation factor:                                     1.84
Prefixes being announced from the ARIN address blocks:             7261
    Unique aggregates announced from the ARIN address blocks:      4443
ARIN Region origin ASes present in the Internet Routing Table:     1128
    ARIN Prefixes per ASN:                                         6.44
ARIN Region origin ASes announcing only one prefix:                 412
ARIN Region transit ASes present in the Internet Routing Table:     159
Average ARIN Region AS path length visible:                         4.4
    Max ARIN Region AS path length visible:                          14
Number of ARIN region 32-bit ASNs visible in the Routing Table:     143
Number of ARIN addresses announced to Internet:                86272464
    Equivalent to 5 /8s, 36 /16s and 105 /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:                      3385
    Total RIPE prefixes after maximum aggregation:                 2757
    RIPE Deaggregation factor:                                     1.23
Prefixes being announced from the RIPE address blocks:             3373
    Unique aggregates announced from the RIPE address blocks:      2766
RIPE Region origin ASes present in the Internet Routing Table:      671
    RIPE Prefixes per ASN:                                         5.03
RIPE Region origin ASes announcing only one prefix:                 320
RIPE Region transit ASes present in the Internet Routing Table:     108
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:                58028288
    Equivalent to 3 /8s, 117 /16s and 113 /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:                    1495
    Total LACNIC prefixes after maximum aggregation:                587
    LACNIC Deaggregation factor:                                   2.55
Prefixes being announced from the LACNIC address blocks:           1493
    Unique aggregates announced from the LACNIC address blocks:     816
LACNIC Region origin ASes present in the Internet Routing Table:    176
    LACNIC Prefixes per ASN:                                       8.48
LACNIC Region origin ASes announcing only one prefix:                70
LACNIC Region transit ASes present in the Internet Routing Table:    25
Average LACNIC Region AS path length visible:                       5.4
    Max LACNIC Region AS path length visible:                        14
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    71
Number of LACNIC addresses announced to Internet:               4253760
    Equivalent to 0 /8s, 64 /16s and 232 /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:                    904
    Total AfriNIC prefixes after maximum aggregation:               186
    AfriNIC Deaggregation factor:                                  4.86
Prefixes being announced from the AfriNIC address blocks:           904
    Unique aggregates announced from the AfriNIC address blocks:    294
AfriNIC Region origin ASes present in the Internet Routing Table:    49
    AfriNIC Prefixes per ASN:                                     18.45
AfriNIC Region origin ASes announcing only one prefix:               23
AfriNIC Region transit ASes present in the Internet Routing Table:   11
Average AfriNIC Region AS path length visible:                      4.1
    Max AfriNIC Region AS path length visible:                       13
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   26
Number of AfriNIC addresses announced to Internet:              2666752
    Equivalent to 0 /8s, 40 /16s and 177 /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         242       1983     151  SINET-AS Research Organization of Infor
  1237         188         74     135  KREONET-AS-KR KISTI, KR
  7575         180        330     126  AARNET-AS-AP Australian Academic and Re
 58647         137         16       1  KAGAWAU-AS Kagawa University, JP
  4538         110       4160      69  ERX-CERNET-BKB China Education and Rese
  4621          81         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
  9317          49         16       1  ITISNET-AS INHA UNIVERSITY, KR
 45773          47          3       5  HECPERN-AS-PK PERN AS Content Servie Pr

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         241         51       7  NU-AS, US
   376         234        180     158  RISQ-AS, CA
  5786         195         16       1  UPRENET, PR
  2152         156        507      85  CSUNET-NW, US
 18558         137         18       4  NETBLK-RCOEK, US
  2920         111         34       6  LACOE, US
 21976          86         51      18  NJEDGE-NET, US
  1736          80         16       1  MU-AS, US
     3          78        528      13  MIT-GATEWAYS, US
  3477          72         71      42  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         275       1998     237  DFN Verein zur Foerderung eines Deutsch
   786         186       1763     184  JANET Jisc Services Limited, GB
  8895         142         24       4  ISU Internet Services Unit ISU, SA
   559         116        550     107  SWITCH Peering requests: peering at switch
  1103          97       1520      84  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          61         32      58  ROEDUNET, RO
  1930          57         81      52  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         181        207      41  Associacao Rede Nacional de Ensino e Pe
 28391         152         10      66  Universidad Juarez Autonoma de Tabasco,
 11340          94         24      54  Red Universitaria Nacional, CL
  1251          65         37      20  FUNDACAO DE AMPARO A PESQUISA DO ESTADO
  2715          58        102      38  Fundacao Carlos Chagas Filho de Amparo 
 19611          44         17       2  Associacao Antonio Vieira - Unisinos, B
  4270          43         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
  2018         338        319      74  TENET-1, ZA
327687         137         28       3  RENU, UG
 36914         101         82       3  KENET-AS, KE
  2561          72          5      31  EUN, EG
  8094          55         48       4  PUKNET, ZA
327700          36         16       1  MoRENet, MZ
 37215          32          8       1  MAREN, MW
  6879          24          2       9  ENSTINET-, EG
 37182          14          8       1  TERNET, TZ
 37074          11          8       2  UG-AS, GH

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
  2018         338        319      74  TENET-1, ZA
   680         275       1998     237  DFN Verein zur Foerderung eines Deutsch
  2907         242       1983     151  SINET-AS Research Organization of Infor
  7896         241         51       7  NU-AS, US
   376         234        180     158  RISQ-AS, CA
  5786         195         16       1  UPRENET, PR
  1237         188         74     135  KREONET-AS-KR KISTI, KR
   786         186       1763     184  JANET Jisc Services Limited, GB
  1916         181        207      41  Associacao Rede Nacional de Ensino e Pe
  7575         180        330     126  AARNET-AS-AP Australian Academic and Re

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

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

   ASN  No of nets  Net Savings  Description
  7896         241          234  NU-AS, US
  5786         195          194  UPRENET, PR
  1916         181          140  Associacao Rede Nacional de Ensino e Pesquisa, 
  8895         142          138  ISU Internet Services Unit ISU, SA
 58647         137          136  KAGAWAU-AS Kagawa University, JP
327687         137          134  RENU, UG
 18558         137          133  NETBLK-RCOEK, US
  2920         111          105  LACOE, US
 36914         101           98  KENET-AS, KE
  2907         242           91  SINET-AS Research Organization of Information a

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
     19658  UNALLOCATED  65.205.131.0/24          11096  FLORIDANET, US
     14822  UNALLOCATED  140.163.0.0/16           10466  MAGPI, US
     14822  UNALLOCATED  140.163.0.0/17           10466  MAGPI, US
     14822  UNALLOCATED  140.163.6.0/24           10466  MAGPI, US
     14822  UNALLOCATED  140.163.64.0/24          10466  MAGPI, US
     14822  UNALLOCATED  140.163.70.0/24          10466  MAGPI, US
     14822  UNALLOCATED  140.163.128.0/17         10466  MAGPI, US
     22063  UNALLOCATED  153.10.0.0/16             2152  CSUNET-NW, US
    394784  UNALLOCATED  192.107.242.0/24         40831  PHS, US
     19658  UNALLOCATED  199.27.241.0/24          11096  FLORIDANET, US

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

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
192.107.242.0/24     Origin:    394784  UNASSIGNED
192.107.242.0/24    Transit:     40831  PHS, US
205.166.145.0/24     Origin:    394784  UNASSIGNED
205.166.145.0/24    Transit:     40831  PHS, 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      /15:111     /16:1899    /17:366     /18:405     
/19:481     /20:726     /21:726     /22:1194    /23:1219    /24:8614    
/25:30      /26:25      /27:33      /28:1       /29:0       /30:0       
/31:0       /32:0       

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

   ASN  No of nets  Total ann.  Description
  8895         137         142  ISU Internet Services Unit ISU, SA
 36914          88         101  KENET-AS, KE
 23024          53          56  OCDE, US
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
327700          32          36  MoRENet, MZ
 25977          31          45  HCCS, US
263282          30          37  FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN
 27609          29          45  USC-UNIVERSITY-HOSPITAL, US
 32440          29          43  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        18:41       23:8      
  24:7        31:6        37:6        38:9        40:1        41:150    
  44:5        45:58       46:7        47:1        49:4        50:1      
  52:1        59:3        61:3        62:7        63:34       64:46     
  65:1        66:37       67:43       68:8        69:21       71:1      
  72:11       74:20       76:32       77:6        78:3        79:10     
  80:18       81:29       82:5        83:7        84:9        85:35     
  86:9        87:1        88:1        89:10       91:47       92:1      
  93:19       94:4        95:4        96:5        97:1        98:2      
 102:12      103:157     104:15      108:8       109:8       110:3      
 111:20      112:4       114:23      116:5       117:61      119:3      
 121:17      125:1       128:81      129:173     130:95      131:47     
 132:61      133:138     134:94      136:187     137:139     138:10     
 139:5       140:36      141:2       142:41      143:37      144:32     
 146:124     147:58      148:191     149:13      150:34      151:6      
 152:75      153:11      154:24      155:49      156:65      157:25     
 158:9       159:19      160:25      161:16      162:19      163:57     
 164:40      165:54      166:1       167:16      168:131     169:10     
 170:51      171:1       172:2       173:2       175:12      176:8      
 177:10      178:1       179:11      180:5       181:11      182:6      
 184:7       185:40      186:3       187:17      188:12      189:5      
 190:48      191:36      192:1168    193:250     194:141     195:93     
 196:175     197:5       198:435     199:211     200:254     201:39     
 202:360     203:394     204:340     205:171     206:151     207:155    
 208:57      209:103     210:110     211:13      212:171     213:4      
 216:80      217:15      218:6       219:1       220:16      222:2      


End of report


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