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

REN Routing Table Report cscora at frr.nsrc.org
Sun Dec 5 20:10:29 UTC 2021


Global R&E Routing Table Report   20:10 GMT Sun 05 Dec, 2021

  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:                               14707
    Prefixes after maximum aggregation (per Origin AS):            7667
    Deaggregation factor:                                          1.92
    Unique aggregates announced (without unneeded subnets):        8929
Total ASes present in the Internet Routing Table:                  2172
    Prefixes per ASN:                                              6.77
Origin-only ASes present in the Internet Routing Table:            1880
Origin ASes announcing only one prefix:                             849
Transit ASes present in the Internet Routing Table:                 292
Transit-only ASes present in the Internet Routing Table:             44
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      14
    Max AS path prepend of ASN ( 10497)                              11
Prefixes from unregistered ASNs in the Routing Table:                 6
    Number of instances of unregistered ASNs:                         6
Number of 32-bit ASNs allocated by the RIRs:                      38004
Number of 32-bit ASNs visible in the Routing Table:                 501
Prefixes from 32-bit ASNs in the Routing Table:                    1459
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:                    151901184
    Equivalent to 9 /8s, 13 /16s and 212 /24s
    Percentage of available address space announced:                4.1
    Percentage of allocated address space announced:                4.1
    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:        1524

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

Prefixes being announced by APNIC Region ASes:                     4033
    Total APNIC prefixes after maximum aggregation:                2168
    APNIC Deaggregation factor:                                    1.86
Prefixes being announced from the APNIC address blocks:            4035
    Unique aggregates announced from the APNIC address blocks:     2574
APNIC Region origin ASes present in the Internet Routing Table:     549
    APNIC Prefixes per ASN:                                        7.35
APNIC Region origin ASes announcing only one prefix:                236
APNIC Region transit ASes present in the Internet Routing Table:     57
Average APNIC Region AS path length visible:                        4.6
    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:               45224448
    Equivalent to 2 /8s, 178 /16s and 18 /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:                      7370
    Total ARIN prefixes after maximum aggregation:                 4080
    ARIN Deaggregation factor:                                     1.81
Prefixes being announced from the ARIN address blocks:             7380
    Unique aggregates announced from the ARIN address blocks:      4586
ARIN Region origin ASes present in the Internet Routing Table:     1142
    ARIN Prefixes per ASN:                                         6.46
ARIN Region origin ASes announcing only one prefix:                 424
ARIN Region transit ASes present in the Internet Routing Table:     154
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:     154
Number of ARIN addresses announced to Internet:                86666240
    Equivalent to 5 /8s, 42 /16s and 108 /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:                       898
    Total RIPE prefixes after maximum aggregation:                  615
    RIPE Deaggregation factor:                                     1.46
Prefixes being announced from the RIPE address blocks:              887
    Unique aggregates announced from the RIPE address blocks:       618
RIPE Region origin ASes present in the Internet Routing Table:      206
    RIPE Prefixes per ASN:                                         4.31
RIPE Region origin ASes announcing only one prefix:                  98
RIPE Region transit ASes present in the Internet Routing Table:      34
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          12
Number of RIPE region 32-bit ASNs visible in the Routing Table:      29
Number of RIPE addresses announced to Internet:                13403392
    Equivalent to 0 /8s, 204 /16s and 133 /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:                    1507
    Total LACNIC prefixes after maximum aggregation:                616
    LACNIC Deaggregation factor:                                   2.45
Prefixes being announced from the LACNIC address blocks:           1508
    Unique aggregates announced from the LACNIC address blocks:     860
LACNIC Region origin ASes present in the Internet Routing Table:    181
    LACNIC Prefixes per ASN:                                       8.33
LACNIC Region origin ASes announcing only one prefix:                72
LACNIC Region transit ASes present in the Internet Routing Table:    25
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        14
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    80
Number of LACNIC addresses announced to Internet:               4072192
    Equivalent to 0 /8s, 62 /16s and 35 /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:                    893
    Total AfriNIC prefixes after maximum aggregation:               182
    AfriNIC Deaggregation factor:                                  4.91
Prefixes being announced from the AfriNIC address blocks:           893
    Unique aggregates announced from the AfriNIC address blocks:    287
AfriNIC Region origin ASes present in the Internet Routing Table:    46
    AfriNIC Prefixes per ASN:                                     19.41
AfriNIC Region origin ASes announcing only one prefix:               19
AfriNIC Region transit ASes present in the Internet Routing Table:   13
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       10
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   27
Number of AfriNIC addresses announced to Internet:              2533888
    Equivalent to 0 /8s, 38 /16s and 170 /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         610       2156     456  SINET-AS Research Organization of Infor
  1237         185         74     135  KREONET-AS-KR KISTI, KR
  7575         177        330     123  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         112       4160      69  ERX-CERNET-BKB China Education and Rese
  4621          80         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
  7896         251         51       7  NU-AS, US
   376         203        178     152  RISQ-AS, CA
  5786         195         16       1  UPRENET, PR
  2152         155        507      84  CSUNET-NW, US
 18558         132         18       4  NETBLK-RCOEK, US
  2920         109         34       6  LACOE, US
 21976          85         51      18  NJEDGE-NET, US
  1736          80         16       1  MU-AS, US
     3          77        496      15  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
  8895         142         24       4  ISU Internet Services Unit ISU, SA
  1103          98       1520      85  SURFNET-NL SURFnet, The Netherlands, NL
  1653          52        167      49  SUNET SUNET Swedish University Network,
  1741          43        183      22  FUNETAS, FI
   288          26          5      26  ESA Robert Bosch Strasse 5, DE
  3218          22          4      15  COSMOS-3218-AS AS-COSMOS root, RU
  3267          21         67      17  RUNNET, RU
  8674          16          2      11  NETNOD-IX Netnod Internet Exchange Sver
   224          13        256      13  UNINETT UNINETT, The Norwegian Universi
 29384          13          3       9  QATAR-FOUNDATION, QA

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         177        207      41  Rede Nacional de Ensino e Pesquisa, BR
 28391         152         10      66  Universidad Juarez Autonoma de Tabasco,
 11340          95         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 
 52286          53          4      31  Columbus Networks Guatemala, GT
 19611          45         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

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         349        319      73  TENET-1, ZA
 36914         203         82       3  KENET-AS, KE
  2561          73          5      32  EUN, EG
  8094          50         48       4  PUKNET, ZA
327700          41         16       1  MoRENet, MZ
327687          37         28       3  RENU, UG
  6879          24          2       9  ENSTINET-, EG
 37074          13          8       2  UG-AS, GH
 37501          11         49       6  UOFS, ZA
 37182          10          8       1  TERNET, TZ

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         610       2156     456  SINET-AS Research Organization of Infor
  2018         349        319      73  TENET-1, ZA
  7896         251         51       7  NU-AS, US
   376         203        178     152  RISQ-AS, CA
 36914         203         82       3  KENET-AS, KE
  5786         195         16       1  UPRENET, PR
  1237         185         74     135  KREONET-AS-KR KISTI, KR
  1916         177        207      41  Rede Nacional de Ensino e Pesquisa, BR
  7575         177        330     123  AARNET-AS-AP Australian Academic and Re
 58647         164         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         349          276  TENET-1, ZA
  7896         251          244  NU-AS, US
 36914         203          200  KENET-AS, KE
  5786         195          194  UPRENET, PR
 58647         164          162  KAGAWAU-AS Kagawa University, JP
  8895         142          138  ISU Internet Services Unit ISU, SA
  1916         177          136  Rede Nacional de Ensino e Pesquisa, BR
 18558         132          128  NETBLK-RCOEK, US
 55824         129          106  NKN-CORE-NW NKN Core Network, IN
  2920         109          103  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
     22063  UNALLOCATED  153.10.0.0/16             2152  CSUNET-NW, US
     29955  UNALLOCATED  192.104.1.0/24            2495  KANREN, US
    394784  UNALLOCATED  192.107.242.0/24         40831  PHS, US
     29955  UNALLOCATED  198.252.8.0/21            2495  KANREN, US
     19658  UNALLOCATED  199.27.241.0/24          11096  FLORIDANET, 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       /12:9       
/13:16      /14:26      /15:84      /16:1391    /17:329     /18:383     
/19:457     /20:707     /21:647     /22:1084    /23:1162    /24:8408    
/25:0       /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

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

   ASN  No of nets  Total ann.  Description
 36914         189         203  KENET-AS, KE
  8895         137         142  ISU Internet Services Unit ISU, SA
 23024          53          56  OCDE, US
327700          35          41  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         8:2        12:1        14:84       18:42       23:9      
  24:6        38:9        40:1        41:120      44:3        45:61     
  47:1        49:10       50:1        52:1        59:19       61:3      
  62:2        63:34       64:46       66:36       67:43       68:8      
  69:21       71:1        72:10       74:20       76:33       77:4      
  80:7        81:1        82:3        84:4        85:14       86:6      
  87:1        89:2        91:16       92:1        93:1        95:1      
  96:5        97:1        98:2       101:4       102:14      103:297    
 104:12      108:8       109:7       110:3       111:20      112:4      
 114:23      116:5       117:61      118:32      119:3       121:17     
 122:8       123:8       125:1       128:81      129:170     130:93     
 131:80      132:59      133:138     134:91      136:186     137:80     
 138:8       139:5       140:36      141:1       142:41      143:33     
 144:52      146:125     147:54      148:153     149:13      150:40     
 151:4       152:74      153:1       154:25      155:51      156:67     
 157:25      158:42      159:18      160:25      161:16      162:19     
 163:55      164:45      165:54      166:1       167:16      168:161    
 169:10      170:53      171:1       172:2       173:2       175:28     
 176:8       177:10      179:13      180:20      181:12      182:6      
 184:5       185:12      186:3       187:18      188:3       189:3      
 190:53      191:37      192:875     193:80      194:53      195:52     
 196:150     197:111     198:440     199:236     200:253     201:39     
 202:564     203:417     204:312     205:169     206:182     207:166    
 208:55      209:112     210:110     211:13      212:135     213:2      
 216:86      217:1       218:6       219:7       220:17      222:2      


End of report


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