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

REN Routing Table Report cscora at frr.nsrc.org
Sat Sep 25 20:10:28 UTC 2021


Global R&E Routing Table Report   20:10 GMT Sat 25 Sep, 2021

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

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

BGP routing table entries examined:                               17288
    Prefixes after maximum aggregation (per Origin AS):            9831
    Deaggregation factor:                                          1.76
    Unique aggregates announced (without unneeded subnets):       11132
Total ASes present in the Internet Routing Table:                  2660
    Prefixes per ASN:                                              6.50
Origin-only ASes present in the Internet Routing Table:            2287
Origin ASes announcing only one prefix:                            1069
Transit ASes present in the Internet Routing Table:                 373
Transit-only ASes present in the Internet Routing Table:             61
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      15
    Max AS path prepend of ASN (211089)                              11
Prefixes from unregistered ASNs in the Routing Table:                 9
    Number of instances of unregistered ASNs:                         9
Number of 32-bit ASNs allocated by the RIRs:                      37333
Number of 32-bit ASNs visible in the Routing Table:                 589
Prefixes from 32-bit ASNs in the Routing Table:                    1743
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:              4
Number of addresses announced to Internet:                    197123824
    Equivalent to 11 /8s, 191 /16s and 222 /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:        1894

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

Prefixes being announced by APNIC Region ASes:                     4054
    Total APNIC prefixes after maximum aggregation:                2175
    APNIC Deaggregation factor:                                    1.86
Prefixes being announced from the APNIC address blocks:            4056
    Unique aggregates announced from the APNIC address blocks:     2597
APNIC Region origin ASes present in the Internet Routing Table:     558
    APNIC Prefixes per ASN:                                        7.27
APNIC Region origin ASes announcing only one prefix:                241
APNIC Region transit ASes present in the Internet Routing Table:     55
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         13
Number of APNIC region 32-bit ASNs visible in the Routing Table:    211
Number of APNIC addresses announced to Internet:               45206016
    Equivalent to 2 /8s, 177 /16s and 202 /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:                      7472
    Total ARIN prefixes after maximum aggregation:                 4125
    ARIN Deaggregation factor:                                     1.81
Prefixes being announced from the ARIN address blocks:             7491
    Unique aggregates announced from the ARIN address blocks:      4666
ARIN Region origin ASes present in the Internet Routing Table:     1144
    ARIN Prefixes per ASN:                                         6.55
ARIN Region origin ASes announcing only one prefix:                 417
ARIN Region transit ASes present in the Internet Routing Table:     158
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:     151
Number of ARIN addresses announced to Internet:                86982096
    Equivalent to 5 /8s, 47 /16s and 61 /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:                      3388
    Total RIPE prefixes after maximum aggregation:                 2759
    RIPE Deaggregation factor:                                     1.23
Prefixes being announced from the RIPE address blocks:             3374
    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:     106
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          15
Number of RIPE region 32-bit ASNs visible in the Routing Table:     129
Number of RIPE addresses announced to Internet:                58077440
    Equivalent to 3 /8s, 118 /16s and 49 /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:                    1455
    Total LACNIC prefixes after maximum aggregation:                582
    LACNIC Deaggregation factor:                                   2.50
Prefixes being announced from the LACNIC address blocks:           1453
    Unique aggregates announced from the LACNIC address blocks:     805
LACNIC Region origin ASes present in the Internet Routing Table:    173
    LACNIC Prefixes per ASN:                                       8.40
LACNIC Region origin ASes announcing only one prefix:                67
LACNIC Region transit ASes present in the Internet Routing Table:    24
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        12
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    71
Number of LACNIC addresses announced to Internet:               4186912
    Equivalent to 0 /8s, 63 /16s and 227 /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:                    910
    Total AfriNIC prefixes after maximum aggregation:               186
    AfriNIC Deaggregation factor:                                  4.89
Prefixes being announced from the AfriNIC address blocks:           910
    Unique aggregates announced from the AfriNIC address blocks:    294
AfriNIC Region origin ASes present in the Internet Routing Table:    50
    AfriNIC Prefixes per ASN:                                     18.20
AfriNIC Region origin ASes announcing only one prefix:               24
AfriNIC Region transit ASes present in the Internet Routing Table:   13
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:   27
Number of AfriNIC addresses announced to Internet:              2670336
    Equivalent to 0 /8s, 40 /16s and 191 /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         609       2157     457  SINET-AS Research Organization of Infor
  1237         188         74     135  KREONET-AS-KR KISTI, KR
  7575         175        329     121  AARNET-AS-AP Australian Academic and Re
 58647         164         18       2  KAGAWAU-AS Kagawa University, JP
 55824         129         19      23  NKN-CORE-NW NKN Core Network, IN
  4538         111       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
  1659          57       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
  7896         250         51       7  NU-AS, US
   376         234        180     158  RISQ-AS, CA
  5786         201         16       1  UPRENET, PR
  2152         156        507      85  CSUNET-NW, US
 18558         137         18       4  NETBLK-RCOEK, US
  2920         112         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         276       1998     238  DFN Verein zur Foerderung eines Deutsch
   786         187       1775     184  JANET Jisc Services Limited, GB
  8895         142         24       4  ISU Internet Services Unit ISU, SA
   559         115        550     106  SWITCH Peering requests: peering at switch
  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          67        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         182        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         340        319      73  TENET-1, ZA
327687         137         28       3  RENU, UG
 36914         100         82       3  KENET-AS, KE
  2561          72          5      31  EUN, EG
  8094          55         48       4  PUKNET, ZA
327700          38         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
  2907         609       2157     457  SINET-AS Research Organization of Infor
  2018         340        319      73  TENET-1, ZA
   680         276       1998     238  DFN Verein zur Foerderung eines Deutsch
  7896         250         51       7  NU-AS, US
   376         234        180     158  RISQ-AS, CA
  5786         201         16       1  UPRENET, PR
  1237         188         74     135  KREONET-AS-KR KISTI, KR
   786         187       1775     184  JANET Jisc Services Limited, GB
  1916         182        207      41  Associacao Rede Nacional de Ensino e Pe
  7575         175        329     121  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
  2018         340          267  TENET-1, ZA
  7896         250          243  NU-AS, US
  5786         201          200  UPRENET, PR
 58647         164          162  KAGAWAU-AS Kagawa University, JP
  1916         182          141  Associacao Rede Nacional de Ensino e Pesquisa, 
  8895         142          138  ISU Internet Services Unit ISU, SA
327687         137          134  RENU, UG
 18558         137          133  NETBLK-RCOEK, US
 55824         129          106  NKN-CORE-NW NKN Core Network, IN
  2920         112          106  LACOE, 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
     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
    394784  UNALLOCATED  205.166.145.0/24         40831  PHS, 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
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:     11537  INTERNET2-RESEARCH-EDU, US
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      /15:112     /16:1929    /17:372     /18:426     
/19:529     /20:798     /21:811     /22:1343    /23:1385    /24:9429    
/25:30      /26:24      /27:35      /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          87         100  KENET-AS, KE
 23024          53          56  OCDE, US
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
327700          32          38  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        14:84       18:41     
  23:8        24:6        31:6        37:6        38:9        40:1      
  41:147      44:5        45:58       46:7        47:1        49:10     
  50:1        52:1        59:19       61:3        62:7        63:34     
  64:46       66:36       67:43       68:8        69:21       71:1      
  72:12       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        95:5        96:5        97:1        98:2      
 101:4       102:12      103:303     104:15      108:8       109:8      
 110:3       111:20      112:4       114:23      116:5       117:61     
 118:32      119:3       121:17      122:8       123:8       125:3      
 128:81      129:173     130:95      131:88      132:61      133:138    
 134:95      136:193     137:140     138:8       139:5       140:36     
 141:2       142:43      143:39      144:54      146:124     147:58     
 148:159     149:13      150:39      151:6       152:75      153:11     
 154:24      155:50      156:66      157:25      158:45      159:19     
 160:25      161:16      162:19      163:62      164:40      165:54     
 166:1       167:16      168:129     169:10      170:51      171:1      
 172:2       173:2       175:30      176:8       177:10      178:1      
 179:11      180:20      181:11      182:6       184:4       185:39     
 186:3       187:18      188:13      189:3       190:48      191:32     
 192:1257    193:249     194:142     195:94      196:180     197:5      
 198:445     199:236     200:253     201:39      202:555     203:416    
 204:346     205:168     206:176     207:166     208:57      209:114    
 210:111     211:13      212:169     213:4       216:80      217:15     
 218:6       219:7       220:16      222:2      

End of report


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